Network security
Enterprise cyberdefense strategies must include network security best practices. Get advice on essential network security topics such as remote access, VPNs, zero-trust security, NDR, endpoint management, IoT security, hybrid security, Secure Access Service Edge, mobile security and more.
Top Stories
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News
06 Dec 2022
Cisco teases new capabilities with SD-WAN update
Cisco SD-WAN 17.10 enhancements give enterprises the option of using security service edge providers Cloudflare and Netskope in secure access service edge deployments. Continue Reading
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News
06 Dec 2022
MegaRAC flaws, IP leak impact multiple server brands
MegaRAC BMC software from American Megatrends, Inc. have a trio of serious security vulnerabilities that were discovered following an intellectual property leak. Continue Reading
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News
05 Dec 2022
Rackspace 'security incident' causes Exchange Server outages
Rackspace has not said what caused the security incident, but the cloud provider said it proactively disconnected its Hosted Exchange offering as it investigates the matter. Continue Reading
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News
02 Dec 2022
Experts argue 'sludge' could muck up cyber attacks
Network defenders can supplement their security postures with additional settings and policies that frustrate and discourage attackers, according to a new research paper. Continue Reading
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Opinion
02 Dec 2022
7 steps to implementing a successful XDR strategy
There's still confusion around what extended detection and response is, but it will play a key role in enterprise security. To successfully implement XDR, follow these steps. Continue Reading
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News
30 Nov 2022
Exchange Server bugs caused years of security turmoil
The four high-profile sets of security vulnerabilities in Microsoft Exchange Server, disclosed by researcher Orange Tsai, are set to remain a major concern for organizations. Continue Reading
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News
30 Nov 2022
Tenable: 72% of organizations remain vulnerable to Log4Shell
New research shows the attack surface remains wide for the Log4j vulnerability, known as Log4Shell, which caused significant problems for organizations over the past year. Continue Reading
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Feature
28 Nov 2022
WLAN security: Best practices for wireless network security
Follow these wireless network security best practices to ensure your company's WLAN remains protected against the top threats and vulnerabilities. Continue Reading
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News
23 Nov 2022
Cybereason warns of fast-moving Black Basta campaign
Threat actors with the Black Basta ransomware-as-a-service group are compromising networks in as little as one hour and stealing sensitive data before disabling DNS services. Continue Reading
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Tip
17 Nov 2022
Industrial control system security needs ICS threat intelligence
Threat actors and nation-states constantly try to find ways to attack all-important industrial control systems. Organizations need specialized ICS threat intelligence to fight back. Continue Reading
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News
17 Nov 2022
LockBit ransomware activity nose-dived in October
LockBit, the most prolific ransomware group in 2022, had itself a down month as GuidePoint Security researchers reported a 49% decrease in its infections for October. Continue Reading
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News
16 Nov 2022
Rapid7 discloses more F5 BIG-IP vulnerabilities
While the severity of the issues is relatively low, F5 devices are commonly targeted by attackers to gain persistence inside a network. Continue Reading
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News
10 Nov 2022
TrustCor under fire over certificate authority concerns
TrustCor Systems, a certificate authority registered in Panama, is in hot water after a Washington Post report raised questions about its apparent connections to a spyware vendor. Continue Reading
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Tip
10 Nov 2022
Common lateral movement techniques and how to prevent them
Lateral movement techniques enable attackers to dig deeper into compromised environments. Discover what lateral movement attacks are and four attack techniques. Continue Reading
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Tip
08 Nov 2022
Types of vulnerability scanning and when to use each
Vulnerability scanning gives companies a key weapon when looking for security weaknesses. Discovery, assessment and threat prioritization are just a few of its benefits. Continue Reading
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News
07 Nov 2022
Microsoft: Nation-state threats, zero-day attacks increasing
Microsoft's Digital Defense Report 2022 pointed the finger at China, which enacted a new vulnerability disclosure law last year, as the source of many zero-day attacks. Continue Reading
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News
07 Nov 2022
Nozomi Networks CEO talks OT security and 'budget muscle'
Nozomi Networks CEO Edgard Capdevielle sat down with TechTarget Editorial to discuss the evolution of OT security and the challenge of 'budget muscle' many organizations face. Continue Reading
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News
04 Nov 2022
Honeywell weighs in on OT cybersecurity challenges, evolution
TechTarget Editorial sat down with Honeywell's Paul Griswold and Jeff Zindel to discuss the rapid growth and evolution of the operational technology cybersecurity industry. Continue Reading
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News
03 Nov 2022
Ransomware on the rise, hitting schools and healthcare
October ransomware disclosures and public reports tracked by TechTarget Editorial increased from previous months, with notable attacks on education and healthcare organizations. Continue Reading
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News
02 Nov 2022
U.S. Treasury: Ransomware attacks increased in 2021
A new report from the U.S. Treasury's Financial Crimes Enforcement Network showed an increase in businesses reporting ransomware attacks in the second half of 2021. Continue Reading
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News
01 Nov 2022
OpenSSL vulnerabilities get high-priority patches
The OpenSSL Project released version 3.0.7 Tuesday to address a pair of high-severity buffer overflow vulnerabilities in the widely used cryptography library. Continue Reading
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News
26 Oct 2022
Ukraine: Russian cyber attacks aimless and opportunistic
Victor Zhora, a key Ukrainian cybersecurity official, says Russia is acting with "no particular strategy" in its cyber attacks on his country as their military invasion drags on. Continue Reading
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Tutorial
25 Oct 2022
How to use PuTTY for SSH key-based authentication
This tutorial on the open source PuTTY SSH client covers how to install it, its basic use, and step-by-step instructions for configuring key-based authentication. Continue Reading
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News
24 Oct 2022
CISA warns of ransomware attacks on healthcare providers
A new CISA advisory warned administrators at hospitals and healthcare providers about newly discovered ransomware variant, dubbed Daixin Team, that poses a particular threat. Continue Reading
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Tip
24 Oct 2022
6 ways to prevent privilege escalation attacks
Privileges dictate the access a user or device gets on a network. Hackers who access these privileges can create tremendous damage. But there are ways to keep your networks safe. Continue Reading
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News
20 Oct 2022
Brazil arrests alleged Lapsus$ hacker
Federal police in Brazil arrested a person accused of being a key member of the Lapsus$ hacking group on charges related to the takedown of government websites. Continue Reading
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News
13 Oct 2022
Despite LockBit rebound, ransomware attacks down in 2022
LockBit cybercriminals are back in action with new ransomware attacks and publicity pushes. But many other new groups saw lower levels in activity in Q3, according to Cyberint. Continue Reading
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Feature
13 Oct 2022
Why Kali Linux is the go-to distribution for penetration testing
Discover why penetration testers prefer to use the Kali Linux distribution for offensive security, from collecting useful tools together to being usable from multiple devices. Continue Reading
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Feature
13 Oct 2022
How to configure and customize Kali Linux
Learning how to use Kali Linux for ethical hacking and penetration testing? Read step by step how to configure and customize the distribution. Continue Reading
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Feature
12 Oct 2022
7 steps for implementing zero trust, with real-life examples
More than a decade since the term's inception, zero-trust security is still much easier said than done. Here's how to get started. Continue Reading
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Tip
12 Oct 2022
An overview of the CISA Zero Trust Maturity Model
A zero-trust framework blocks all attempts to access internal infrastructure without authentication. The CISA Zero Trust Maturity Model is a roadmap to get there. Continue Reading
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News
11 Oct 2022
BlackByte ransomware uses new EDR evasion technique
Attackers deploying the BlackByte ransomware strain are using vulnerable drivers to target a part of the operating system that many security products rely on for protection. Continue Reading
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News
11 Oct 2022
Critical Fortinet vulnerability under active exploitation
Fortinet said the critical vulnerability affects three of its services -- FortiOS, FortiProxy and FortiSwitch Manager -- and urged customers to take immediate action. Continue Reading
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Tip
11 Oct 2022
Top 6 challenges of a zero-trust security model
Zero trust has a number of challenges, but because the model is highly beneficial, it's important for organizations to learn how to overcome them. Continue Reading
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News
11 Oct 2022
Google launches new supply chain security offerings
Securing the software supply chain, especially open source libraries, was a major theme behind the new products released at the Google Cloud Next '22 conference. Continue Reading
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Tip
11 Oct 2022
How to conduct a cybersecurity audit based on zero trust
This checklist offers guidance on how to prepare for a zero-trust cybersecurity audit and helps document how well cybersecurity controls are performing based on CISA's ZTMM. Continue Reading
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Tip
07 Oct 2022
Perimeter security vs. zero trust: It's time to make the move
Perimeter security requires a border to protect enterprise data. With more and more users working outside that border, zero trust promises a better security option for the future. Continue Reading
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News
05 Oct 2022
APTs compromised defense contractor with Impacket tools
A CISA alert warned that APT actors compromised a defense contractor's Microsoft Exchange server and used Impacket, an open source Python toolkit, to move laterally in the network. Continue Reading
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News
04 Oct 2022
Secureworks finds network intruders see little resistance
A report from Secureworks found that in many network intrusions, the attackers only need to employ basic, unsophisticated measures to evade detection. Continue Reading
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Tip
04 Oct 2022
Top zero-trust use cases in the enterprise
Still hesitating to adopt zero trust? Learn about the main zero-trust use cases, as well as its benefits, myths and trends that are beginning to emerge. Continue Reading
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News
03 Oct 2022
Intermittent encryption attacks: Who's at risk?
Threat analysts have observed some ransomware gangs using a new technique that only partially encrypts victims' files, which could evade some ransomware defenses. Continue Reading
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News
30 Sep 2022
Microsoft Exchange Server targeted with zero-day vulnerabilities
Microsoft warned that two unpatched zero-day vulnerabilities are being exploited against Exchange Server, a problem that's causing déjà vu for some researchers. Continue Reading
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Answer
30 Sep 2022
Top 6 benefits of zero-trust security for businesses
The zero-trust security model demands infosec leaders take a holistic approach to IT infrastructure security. Learn about the top six business benefits of zero trust here. Continue Reading
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News
29 Sep 2022
Cobalt Strike malware campaign targets job seekers
Cisco Talos researchers spotted a new wave of phishing attacks that target job seekers in the U.S. and New Zealand, infecting them with Cobalt Strike beacons. Continue Reading
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News
29 Sep 2022
Unit 42 finds polyglot files delivering IcedID malware
Palo Alto Networks' Unit 42 says attackers are using decoy Microsoft Compiled HTML Help files containing multiple file formats to infect systems with information-stealing malware. Continue Reading
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Tip
29 Sep 2022
The 5 principles of zero-trust security
Zero trust is a journey, not a destination. Ensure your corporate network is safe from internal and external threats by implementing these five principles of zero-trust security. Continue Reading
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News
28 Sep 2022
NCC Group: IceFire ransomware gang ramping up attacks
While the ransomware group was first observed in March, IceFire emerged on NCC Group's radar last month when attacks against English-speaking organizations soared. Continue Reading
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Tip
28 Sep 2022
Why zero trust requires microsegmentation
Microsegmentation is a key security technique that enables organizations to achieve a zero-trust model and helps ensure the security of workloads regardless of where they are located. Continue Reading
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Answer
28 Sep 2022
Compare zero trust vs. the principle of least privilege
Zero trust and the principle of least privilege may appear to solve the same issue, but they have their differences. Read up on the two methodologies. Continue Reading
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Answer
28 Sep 2022
Zero trust vs. defense in depth: What are the differences?
Security administrators don't have to choose between zero-trust and defense-in-depth cybersecurity methodologies. Learn how the two frameworks complement each other. Continue Reading
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News
26 Sep 2022
Critical Sophos Firewall bug under active exploitation
Sophos said the exploitation of the critical firewall vulnerability has, at this time, affected "an extremely small subset of organizations" predominantly located in South Asia. Continue Reading
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News
21 Sep 2022
Cobalt Strike gets emergency patch
The developer of Cobalt Strike issued an out-of-band security update to address a cross-site scripting vulnerability in the popular penetration testing suite. Continue Reading
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News
19 Sep 2022
Uber says Lapsus$ hackers behind network breach
Uber said a hacker from the Lapsus$ group used stolen credentials from a contractor to gain access to several important silos within its internal network. Continue Reading
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News
15 Sep 2022
Webworm retools old RATs for new cyberespionage threat
Symantec's Threat Hunter Team uncovered a new cyberespionage campaign run by a threat group named Webworm, which uses customized versions of old remote access Trojans. Continue Reading
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News
14 Sep 2022
U.S. drops the hammer on Iranian ransomware outfit
The departments of Justice and the Treasury announced criminal charges and sanctions against a group of Iranian nationals accused of running an international ransomware operation. Continue Reading
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News
08 Sep 2022
LockBit gang leads the way for ransomware
New research from Malwarebytes shows LockBit is far and away the most prolific ransomware gang, with hundreds of confirmed attacks across the globe in recent months. Continue Reading
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Tutorial
01 Sep 2022
How to create and add an SPF record for email authentication
Learn how to create Sender Policy Framework records to list authenticated mail servers for an email domain to fight spam, phishing, email forgery and other malicious email. Continue Reading
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Opinion
01 Sep 2022
How to start developing a plan for SASE implementation
From prioritizing business problems to identifying future initiatives to assessing critical tool gaps, learn how to create a realistic SASE implementation roadmap. Continue Reading
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Tip
01 Sep 2022
Cybersecurity budget breakdown and best practices
Once budget is secured, CISOs must figure out where it should be allocated -- as well as how to justify the costs. Get the lowdown on a cybersecurity budget breakdown here. Continue Reading
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Tip
31 Aug 2022
Remote work cybersecurity: 12 risks and how to prevent them
Expanding attack surfaces, increasing vulnerabilities and overstressed staffs are among a litany of security risks whose ultimate cure requires more than an ounce of prevention. Continue Reading
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News
30 Aug 2022
VMware aims to improve security visibility with new services
Unveiled at VMware Explore, the company's new security services include Project Trinidad, Project Watch and Project Northstar. All three offer customer visibility enhancements. Continue Reading
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News
25 Aug 2022
Ransomware defies seasonal trends with increase
The return and rebranding of major crews saw the volume of ransomware attacks in July jump 47%, defying seasonal trends, according to researchers at NCC Group. Continue Reading
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Tip
19 Aug 2022
8 secure file transfer services for the enterprise
With a plethora of options, finding the best secure file transfer service for your business can pose a challenge. Learn how to make an informed decision. Continue Reading
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Answer
19 Aug 2022
Email authentication: How SPF, DKIM and DMARC work together
Internet protocols for email authentication -- SPF, DKIM and DMARC -- coordinate defense against spammers, phishing and other spoofed email problems. Continue Reading
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News
18 Aug 2022
Russian cyber attacks on Ukraine driven by government groups
Researchers with Trustwave say the cyber attacks against Ukraine are not the work of enlisted private hacking groups but Russian government intelligence agencies. Continue Reading
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News
16 Aug 2022
Mailchimp suffers second breach in 4 months
While the source of the breach has not been confirmed, an attacker got into Mailchimp and gained access to the customer account of cloud hosting provider DigitalOcean. Continue Reading
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News
16 Aug 2022
For cyber insurance, some technology leads to higher premiums
Though cyber insurance demand is exceeding supply and companies might receive less coverage with higher premiums, experts say there are ways enterprises can reduce risk. Continue Reading
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Tip
15 Aug 2022
Cybersecurity skills gap: Why it exists and how to address it
The cybersecurity skills shortage is putting enterprises at risk. Worse, it shows no sign of abating. Here is why it's happening and what employers can do to mitigate the problem. Continue Reading
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News
11 Aug 2022
Rapid7: Cisco ASA and ASDM flaws went unpatched for months
While several of the vulnerabilities were reported to Cisco in February, they remained unpatched until Thursday when Rapid7's Jake Baines discussed the flaws at Black Hat USA 2022. Continue Reading
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News
11 Aug 2022
Cisco hacked by access broker with Lapsus$ ties
No Cisco employee or customer personal information was stolen in the hack, though some data did make it onto the dark web. Continue Reading
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News
11 Aug 2022
SentinelOne discusses the rise of data-wiping malware
During a Black Hat 2022 session, researchers showed how expectations of cyber war may differ from the reality. Continue Reading
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Feature
11 Aug 2022
What is data security? The ultimate guide
Dig into the essentials of data security, from must-have tools, technologies and processes to best practices for keeping data safe. Continue Reading
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News
10 Aug 2022
Industroyer2: How Ukraine avoided another blackout attack
A Black Hat 2022 session explained how the latest attack on Ukraine's energy grid was thwarted this spring, thanks to quick responses and timely sharing of threat data. Continue Reading
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Tip
08 Aug 2022
10 top open source security testing tools
From Kali Linux to Mimikatz to Metasploit, learn about 10 open source penetration testing tools organizations can use to determine how secure their network is. Continue Reading
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Tip
01 Aug 2022
Top 10 UEBA enterprise use cases
The top user and entity behavior analytics use cases fall in cybersecurity, network and data center operations, management and business operations. Check out the risks. Continue Reading
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Tip
29 Jul 2022
SSH key management best practices and implementation tips
SSH connects key systems and the people and processes necessary to keep them functioning. Learn how to use SSH key management best practices to protect your systems and network. Continue Reading
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Tip
27 Jul 2022
SSH2 vs. SSH1 and why SSH versions still matter
The Secure Shell protocol, SSH, was redesigned and released as SSH2 in 2006. While SSH1 lingers for legacy uses, find out how the protocols differ and why it's important. Continue Reading
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News
21 Jul 2022
NCC Group observes a drop in ransomware attacks -- for now
Changes in top ransomware-as-a-service groups like LockBit 2.0 and Conti accounted for the decline in activity, though NCC Group anticipates attacks will ramp back up. Continue Reading
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Tip
15 Jul 2022
Pen testing vs. vulnerability scanning: What’s the difference?
Confused by the differences between pen tests and vulnerability scans? You're not alone. Learn the key differences between the two and when each should be used. Continue Reading
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Tip
14 Jul 2022
3 steps for getting started with security service edge
Before getting started with security service edge (SSE), formulate a migration strategy. Check out these three expert tips for tackling SSE with maximum efficiency and ease. Continue Reading
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Tutorial
11 Jul 2022
How to use SSH tunnels to cross network boundaries
The Secure Shell protocol authenticates and encrypts network connections. Find out how it's used to build tunnels while crossing private networks and even firewalls. Continue Reading
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News
06 Jul 2022
5G networks vulnerable to adversarial ML attacks
A team of academic researchers introduced an attack technique that could disrupt 5G networks, requiring new ways to protect against adversarial machine learning attacks. Continue Reading
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News
06 Jul 2022
HackerOne incident raises concerns for insider threats
While the threat actor's motivation appears to be financial, it shows just how damaging an insider threat could be for vulnerability disclosure and bug bounty systems. Continue Reading
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Feature
27 Jun 2022
How to determine out-of-scope bug bounty assets
What happens when a security researcher discovers a bug in an out-of-scope asset? Learn how to handle bug bounty scope in this excerpt from 'Corporate Cybersecurity.' Continue Reading
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Feature
27 Jun 2022
An enterprise bug bounty program vs. VDP: Which is better?
Creating a bug bounty or vulnerability disclosure program? Learn which option might prove more useful, and get tips on getting a program off the ground. Continue Reading
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Tutorial
23 Jun 2022
Use ssh-keygen to create SSH key pairs and more
Learn how to use ssh-keygen to create new key pairs, copy host keys, use a single login key pair for multiple hosts, retrieve key fingerprints and more in this tutorial. Continue Reading
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News
23 Jun 2022
Access management issues may create security holes
Employees who aren't credentialed to access corporate systems to do their jobs find ways around the red tape that could lead to security breaches. Continue Reading
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News
22 Jun 2022
Ongoing PowerShell security threats prompt a call to action
Although PowerShell poses an ongoing risk to enterprise security as a post-exploitation tool, authorities strongly advise against disabling it completely. Continue Reading
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Opinion
22 Jun 2022
What's driving converged endpoint management and security?
Security and IT teams face challenges in managing and securing a growing number of endpoints, which is driving organizations to look for converged capabilities, according to ESG. Continue Reading
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News
20 Jun 2022
Paige Thompson found guilty in 2019 Capital One data breach
The former Amazon engineer who hacked AWS and gained access to sensitive data belonging to Capital One customers has been convicted. Continue Reading
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Tip
15 Jun 2022
How to evaluate security service edge products
As organizations become more cloud-centric and adapt to remote work, a new technique known as security service edge is gaining traction. Continue Reading
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Tip
13 Jun 2022
11 open source automated penetration testing tools
From Nmap to Wireshark to Jok3r, these open source automated pen testing tools help companies determine how successful their security strategies are at protecting their networks. Continue Reading
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News
13 Jun 2022
Skyhigh Security CEO, VP talk life after McAfee
Gee Rittenhouse discusses the process of building Skyhigh Security, a new company created by Symphony Technology Group as a rebirth of McAfee's enterprise cloud security portfolio. Continue Reading
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Feature
10 Jun 2022
3 types of PKI certificates and their use cases
Public key infrastructure helps authenticate senders via cryptography and digital certificates. Learn about three types of PKI certificates and their use cases. Continue Reading
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News
09 Jun 2022
Mandiant: Cyberextortion schemes increasing pressure to pay
At RSA Conference 2022, Mandiant executives discussed how attackers are pulling out all the stops to pressure victims to pay, from DDoS attacks to harassing victims' customers. Continue Reading
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Feature
07 Jun 2022
Using SSH tunneling for good and evil
Secure Shell tunneling takes the secure application protocol to the next level for bypassing firewalls and creating secure connections everywhere. Continue Reading
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News
07 Jun 2022
Microsoft details zero-trust transition, challenges
Over the past three years, Microsoft has moved to a zero-trust framework. Security engineers outlined the transition and its challenges during a session at RSA Conference 2022. Continue Reading
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News
07 Jun 2022
Cybereason: Paying ransoms leads to more ransomware attacks
Cybereason found that the majority of organizations that pay threat actors to decrypt data are attacked again -- usually within a month and at the hands of the same attackers. Continue Reading
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News
06 Jun 2022
Major DDoS attacks increasing after invasion of Ukraine
DDoS attacks are a growing threat to both government and commercial entities across the globe, as Russia's invasion of Ukraine has increased the rate of attacks in 2022. Continue Reading
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Feature
01 Jun 2022
Implementing wireless security in the enterprise
Learn how to properly secure your enterprise wireless network while considering UX, zero trust and commonly overlooked architectural mistakes. Continue Reading
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Feature
01 Jun 2022
How to design architecture for enterprise wireless security
Learn about a five-phase design methodology that will help your company plan for and create an enterprise wireless security architecture. Continue Reading
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News
25 May 2022
Verizon DBIR: Stolen credentials led to nearly 50% of attacks
The Verizon 2022 Data Breach Investigations Report revealed enterprises' ongoing struggle with securing credentials and avoiding common mistakes such as misconfigurations. Continue Reading