Network & Infrastructure Security
Top Stories
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Tip
15 Jul 2026
Why CISOs should use zero-trust security for IoT
IoT devices have significant business benefits but also open enterprises to escalating security risks. Discover why zero trust is the most practical way to secure IoT. Continue Reading
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Feature
01 Jul 2026
TLS certificate lifetime changes: What CISOs must do now
TLS certificates now expire after 200 days. That window will soon narrow to 100 days and eventually to 47. Is your organization ready? Continue Reading
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Tip
15 Nov 2023
How to protect your organization from IoT malware
IoT devices are attractive targets to attackers, but keeping them secure isn't easy. Still, there are steps to take to minimize risk and protect networks from attacks. Continue Reading
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Feature
13 Nov 2023
SD-WAN deployments feed SASE network and security convergence
Enterprise Strategy Group's Bob Laliberte discusses the latest findings in his newly released report and why SD-WAN's direct cloud connectivity feeds SASE business initiatives. Continue Reading
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News
07 Nov 2023
Microsoft, ZDI disagree over Exchange zero-day flaws
Microsoft said it had previously fixed one of the flaws and that the others did not require a patch. Trend Micro's Zero Day Initiative, however, disagreed with the software giant. Continue Reading
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Opinion
19 Oct 2023
Cloud-native firewalls are the next step in network security
The network security challenges associated with cloud provider and virtual firewalls are leading to third parties introducing cloud-native firewalls. Continue Reading
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Definition
18 Oct 2023
antispoofing
Antispoofing is a technique for identifying and dropping packets that have a false source address. Continue Reading
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Tip
17 Oct 2023
Allowlisting vs. blocklisting: Benefits and challenges
Allowlisting and blocklisting are key components of access control. Learn the benefits and challenges of each approach and why a combination of the two is often the best strategy. Continue Reading
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Answer
13 Oct 2023
What are the most important email security protocols?
Email was designed without security considerations. Email security protocols, including SMPTS, SPF and S/MIME, add mechanisms to keep messaging safe from threats. Continue Reading
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Definition
05 Oct 2023
Microsoft Schannel (Microsoft Secure Channel)
The Microsoft Secure Channel, or Schannel, is a security support package that facilitates the use of Secure Sockets Layer (SSL) and Transport Layer Security (TLS) encryption on Windows platforms. Continue Reading
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Feature
29 Sep 2023
Secure service edge strengths drive SASE deployments
Enterprise Strategy Group's John Grady discusses the latest findings in his newly released report and why businesses won’t start a SASE initiative without first implementing SSE. Continue Reading
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Definition
05 Sep 2023
email security
Email security is the process of ensuring the availability, integrity and authenticity of email communications by protecting against unauthorized access and email threats. Continue Reading
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Definition
23 Aug 2023
network vulnerability scanning
Network vulnerability scanning is the process of inspecting and reporting potential vulnerabilities and security loopholes on a computer, network, web application or other device, including firewalls, switches, routers and wireless access points. Continue Reading
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Feature
16 Aug 2023
How to use dynamic reverse engineering for embedded devices
In this excerpt from 'Practical Hardware Pentesting,' read step-by-step instructions on how to find vulnerabilities on IoT devices using dynamic reverse engineering. Continue Reading
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Feature
16 Aug 2023
Adopt embedded penetration testing to keep IoT devices secure
Regular embedded penetration testing can help discover vulnerabilities before attackers do. The author of 'Practical Hardware Pentesting' explains. Continue Reading
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Tip
12 Jul 2023
IaC security scanning tools, features and use cases
Infrastructure-as-code templates help organizations track cloud assets and other important items. Proper IaC scanning can help companies avoid potential security pitfalls. Continue Reading
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Feature
10 Jul 2023
Wi-Fi AP placement best practices and security policies
From a security standpoint, Wi-Fi network designers should consider the physical and logical placement of APs, as well as management, segmentation and rogue devices. Continue Reading
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Definition
07 Jul 2023
bridge
A bridge is a class of network device designed to connect networks at OSI Level 2, which is the data link layer of a local area network. Continue Reading
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Definition
06 Jul 2023
cloud security architecture
Cloud security architecture is a security strategy designed around securing an organization's data and applications in the cloud. Continue Reading
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Opinion
21 Jun 2023
How AI benefits network detection and response
Interest in security tools with AI is growing as security leaders uncover AI's potential. One area that could especially benefit from AI is network detection and response. Continue Reading
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Tip
16 Jun 2023
Use IoT hardening to secure vulnerable connected devices
IoT and industrial IoT innovation continue to thrive, but IoT device security continues to be an afterthought. Companies should harden connected devices to remain protected. Continue Reading
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News
13 Jun 2023
AWS launches EC2 Instance Connect Endpoint, Verified Permissions
At re:Inforce 2023, AWS launched a new service that allows customers to connect to their EC2 instances through SSH and RDP connections, removing the need for a public IP address. Continue Reading
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Feature
05 Jun 2023
Manage security posture with Microsoft Defender for Endpoint
Organizations need to implement security posture management to ensure their cybersecurity strategy can address malicious actions inside and out. Continue Reading
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News
18 May 2023
Acronis adds EDR to endpoint security
Acronis EDR uses Intel threat detection technology to uncover sophisticated attacks, such as fileless malware, but it also has to compete in a crowded market. Continue Reading
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Feature
05 May 2023
How to start handling Azure network security
Before adopting Microsoft Azure, it's important to consider how to secure the cloud network. That's where network security groups and Azure Firewall come in. Continue Reading
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Definition
13 Apr 2023
Microsoft Defender for Endpoint (formerly Windows Defender ATP)
Microsoft Defender for Endpoint -- formerly Microsoft Defender Advanced Threat Protection or Windows Defender ATP -- is an endpoint security platform designed to help enterprise-class organizations prevent, detect and respond to security threats. Continue Reading
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Definition
11 Apr 2023
intrusion prevention system (IPS)
An intrusion prevention system (IPS) is a cybersecurity tool that examines network traffic to identify potential threats and automatically take action against them. Continue Reading
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Feature
05 Apr 2023
ICS kill chain: Adapting the cyber kill chain to ICS environments
As IT/OT convergence continues to gain traction, industrial control system security cannot be ignored. Performing pen tests based on the ICS Kill Chain can help. Continue Reading
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Feature
05 Apr 2023
An intro to the IDMZ, the demilitarized zone for ICSes
Setting up an IDMZ -- a demilitarized zone between enterprise and industrial networks -- can prevent operational environments from becoming compromised by IT threats. Continue Reading
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Feature
05 Apr 2023
Reinforce industrial control system security with ICS monitoring
Monitoring an industrial control system environment isn't that different from monitoring a traditional IT environment, but there are some considerations to keep in mind. Continue Reading
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Feature
03 Apr 2023
Why medical device vulnerabilities are hard to prioritize
Vulnerabilities in critical medical devices could lead to loss of life. But opinions are mixed on how serious the risk is to patient safety and how best to address the flaws. Continue Reading
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Feature
13 Mar 2023
How to apply and edit Wireshark display filters
Wireshark display filters enable users to narrow the scope of a network traffic scan. Use this tutorial to apply and edit display filters to make detailed network sniffing easier. Continue Reading
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Feature
13 Mar 2023
Customize workflows with Wireshark profiles
Wireshark has a variety of uses, which is why creating multiple personalized Wireshark profiles is important. Learn about Wireshark profiles, how to share them and more. Continue Reading
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News
22 Feb 2023
Exploitation attempts observed against Fortinet FortiNAC flaw
Hours after Horizon3.ai released a proof of concept exploit through GitHub, Shadowserver Foundation observed several IP addresses attempting to exploit the vulnerability. Continue Reading
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Tip
01 Feb 2023
What reverse shell attacks are and how to prevent them
Attackers use reverse shells to covertly attack an organization's environment. Discover what a reverse shell is and how to mitigate such attacks. Continue Reading
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Tip
18 Jan 2023
Top 10 ICS cybersecurity threats and challenges
Industrial control systems are subject to both unique and common cybersecurity threats and challenges. Learn about the top ones here and how to mitigate them. Continue Reading
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News
10 Jan 2023
BitSight, Schneider Electric partner to quantify OT risk
The new partnership aims to provide organizations with increased visibility and risk detection capabilities for operational technology environments and critical infrastructure. Continue Reading
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Opinion
09 Jan 2023
3 enterprise network security predictions for 2023
It's shaping up to be another banner year for network security. 2023 may see decryption-less threat detection, connected home-caused enterprise breaches and new SASE drivers. Continue Reading
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Feature
05 Jan 2023
Windows security tips for the enterprise
Securing a Windows environment is no easy feat. Read up on low-hanging fruit to quickly address, as well as top tips from two security practitioners to get started. Continue Reading
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Feature
13 Dec 2022
12 types of wireless network attacks and how to prevent them
From packet sniffing and rogue access points to spoofing attacks and encryption cracking, learn about common wireless network attacks and how to prevent them. Continue Reading
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News
12 Dec 2022
Fortinet confirms VPN vulnerability exploited in the wild
In an advisory Monday, Fortinet urged customers to take steps to immediately mitigate the critical flaw, which was disclosed earlier by French infosec firm Olympe Cyberdefense. Continue Reading
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News
09 Dec 2022
Claroty unveils web application firewall bypassing technique
Claroty's attack technique bypasses web application firewalls, or WAFs, by tricking those that can't detect JSON as part of their SQL injection detection process. 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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Tip
16 Nov 2022
How Wireshark OUI lookup boosts network security
Learn why using Wireshark OUI lookup for tracking devices by their network interface's organizationally unique identifier is such an important tool for security pros. 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
19 Oct 2022
ProxyLogon researcher details new Exchange Server flaws
After testing Microsoft's mitigations for ProxyLogon, security researcher Orange Tsai discovered new Exchange Server bugs, including one flaw that took more than a year to fix. Continue Reading
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Definition
14 Oct 2022
Wi-Fi Pineapple
A Wi-Fi Pineapple is a wireless auditing platform from Hak5 that allows network security administrators to conduct penetration tests. 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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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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Answer
20 Sep 2022
How DKIM records reduce email spoofing, phishing and spam
Learn how implementing DomainKeys Identified Mail helps protect against phishing, spam and email forgery by digitally signing outgoing messages. 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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Tip
25 Aug 2022
How SPF records prevent email spoofing, phishing and spam
Forged email has long been used by hackers to break into protected systems. Learn how the Sender Policy Framework protocol helps stop spoofing, phishing and other malicious mail. Continue Reading
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News
11 Aug 2022
How CI/CD pipelines are putting enterprise networks at risk
At Black Hat USA 2022, NCC Group researchers demonstrated how threat actors can compromise CI/CD pipelines and break out into enterprise networks and cloud environments. Continue Reading
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News
08 Aug 2022
VMware: The threat of lateral movement is growing
The majority of incident response professionals surveyed for VMware's 'Global Incident Response Threat Report' observed lateral movement in at least some attacks in the past year. Continue Reading
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Feature
05 Aug 2022
Importance of enterprise endpoint security during a pandemic
Enterprises often focus greatly on communications security and less on endpoint security. Review the importance of enterprise endpoint security and best practices to implement it. Continue Reading
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News
28 Jul 2022
AWS adds anti-malware and PII visibility to storage
New tools unveiled by AWS at re:Inforce 2022 add new anti-malware capabilities to AWS block storage and a way to find personally identifiable information with S3 object storage. 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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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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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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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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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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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
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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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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News
16 May 2022
Critical bug in Zyxel firewalls, VPNs exploited in the wild
Initially discovered by Rapid7, the vulnerability poses a critical risk to enterprise networks and could allow attackers to gain remote access to Zyxel security products. Continue Reading
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Tip
29 Apr 2022
Is cloud critical infrastructure? Prep now for provider outages
The cloud has quickly become critical infrastructure to many organizations. Learn about the top cloud provider outages, and discover tips on preventing disruption during downtime. Continue Reading
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Answer
25 Apr 2022
What are the benefits and challenges of microsegmentation?
Administrators are assessing microsegmentation to beef up access control and security. But deploying microsegmentation can be complex. Continue Reading
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Answer
21 Apr 2022
Comparing network segmentation vs. microsegmentation
Network segmentation and microsegmentation both control access but vary in how they do it, as well as how granular their approach is. Learn the differences here. Continue Reading
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Tip
20 Apr 2022
Traditional IT vs. critical infrastructure cyber-risk assessments
When it comes to critical infrastructure cybersecurity, the stakes are uniquely high. Assessing associated cyber-risk, in turn, is uniquely challenging. Continue Reading
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Definition
20 Apr 2022
WLAN Authentication and Privacy Infrastructure (WAPI)
WLAN Authentication and Privacy Infrastructure (WAPI) is a wireless local area network security standard officially supported by the Chinese government. Continue Reading
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Definition
05 Apr 2022
content filtering
Content filtering is a process involving the use of software or hardware to screen and/or restrict access to objectionable email, webpages, executables and other suspicious items. Continue Reading
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Tip
25 Mar 2022
Review Microsoft Defender for endpoint security pros and cons
Microsoft wants to make Defender the only endpoint security product companies need, but does the good outweigh the bad? Read up on its features and pitfalls. Continue Reading
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News
22 Mar 2022
STG launches Skyhigh Security from McAfee cloud assets
The new company combines the McAfee Enterprise Security Service Edge portfolio with a name reminiscent of a previous McAfee acquisition: Skyhigh Networks. Continue Reading
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News
17 Mar 2022
Sandworm APT ramps up Cyclops Blink botnet with Asus routers
Trend Micro discovered that the Cyclops Blink botnet, which had originally targeted WatchGuard devices, is now spreading to Asus and 'at least one other vendor.' Continue Reading
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News
15 Mar 2022
SentinelOne acquires Attivo Networks for $617M
SentinelOne is acquiring Attivo Networks for a $616.5 million price tag and plans to merge the company's identity threat detection services with its XDR offering. Continue Reading
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Definition
11 Mar 2022
screened subnet
A screened subnet, or triple-homed firewall, refers to a network architecture where a single firewall is used with three network interfaces. Continue Reading
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Answer
10 Mar 2022
Use microsegmentation to mitigate lateral attacks
Attackers will get into a company's system sooner or later. Limit their potential damage by isolating zones with microsegmentation to prevent lateral movement. Continue Reading
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News
03 Mar 2022
Intel touts security improvements in 12th-gen Core CPUs
Intel is courting enterprises with a new line of Core vPro CPUs that boast improved security protections ranging from firmware and OS to memory. Continue Reading
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Feature
28 Feb 2022
Implement API rate limiting to reduce attack surfaces
Rate limiting can help developers prevent APIs from being overwhelmed with requests, thus preventing denial-of-service attacks. Learn how to implement rate limiting here. Continue Reading
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Tip
22 Feb 2022
Top 6 critical infrastructure cyber-risks
Cyber attacks on critical infrastructure assets can cause enormous and life-threatening consequences. Discover the top cyber-risks to critical infrastructure here. Continue Reading
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News
08 Feb 2022
Microsoft disables VBA macros by default
Microsoft's change in the default settings of five Office applications aims to shut down a widely used and longstanding threat vector to enterprises. Continue Reading
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Tip
28 Jan 2022
Protect APIs against attacks with this security testing guide
API security cannot be overlooked. Learn how security testing can detect API vulnerabilities and weaknesses before attackers can take advantage of them. Continue Reading
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Feature
28 Jan 2022
Nmap use cases, tools and product comparisons
Nmap is historically known for port scanning, but thanks to several subprojects, its use cases have expanded. Learn how Nmap is used, along with other comparable tools. Continue Reading
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News
10 Jan 2022
VMware ESXi 7 users vulnerable to hypervisor takeover bug
A recent security update addressed a hypervisor takeover vulnerability in several VMware products, but the patch omitted one key server platform in ESXi 7. Continue Reading
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News
20 Dec 2021
Critical bugs could go unpatched amid Log4j concern
Many organizations are focused on finding and patching Log4Shell, but there are other vulnerabilities, including Patch Tuesday bugs, already under active exploitation. Continue Reading
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Definition
15 Dec 2021
spam filter
A spam filter is a program used to detect unsolicited, unwanted and virus-infected emails and prevent those messages from getting to a user's inbox. Continue Reading
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Definition
10 Dec 2021
virtual local area network hopping (VLAN hopping)
Virtual local area network hopping (VLAN hopping) is a method of attacking the network resources of a VLAN by sending packets to a port not usually accessible from an end system. Continue Reading
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Definition
09 Dec 2021
OCSP (Online Certificate Status Protocol)
OCSP (Online Certificate Status Protocol) is one of two common schemes used to maintain the security of a server and other network resources. Continue Reading
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News
07 Dec 2021
USB-over-Ethernet bugs put cloud services at risk
SentinelOne says vulnerabilities in the Eltima SDK, which connects USB devices on virtual workstations, can put enterprises at risk of privilege escalation attacks. Continue Reading
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News
01 Dec 2021
CISA taps CrowdStrike for endpoint security
The U.S. government's cybersecurity authority will be watched over by security vendor CrowdStrike as part of the larger government IT security overhaul. Continue Reading
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Feature
29 Nov 2021
Elastic Stack Security tutorial: How to create detection rules
This excerpt from 'Threat Hunting with Elastic Stack' provides step-by-step instructions to create detection rules and monitor network security events data. Continue Reading
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News
15 Nov 2021
Microsoft releases out-of-band update for Windows Server
Less than a week after November's Patch Tuesday, Microsoft released an unscheduled security update for Windows Server to address an authentication vulnerability. Continue Reading
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News
20 Oct 2021
Chris Krebs weighs in on zero trust, FBI web shell removal
Regarding the FBI action to silently remove web shells from vulnerable Exchange Servers, former CISA director Chris Krebs said he expects to see the action again if appropriate. Continue Reading
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Definition
07 Oct 2021
What is an SSL VPN (Secure Sockets Layer virtual private network)?
An SSL VPN is a type of virtual private network (VPN) that uses the Secure Sockets Layer (SSL) protocol -- or, more often, its successor, the Transport Layer Security (TLS) protocol -- in standard web browsers to provide secure, remote access VPN capability. Continue Reading
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News
28 Sep 2021
Microsoft releases emergency Exchange Server mitigation tool
Microsoft turned its attention to organizations that are slower to patch by releasing an emergency mitigation tool as a temporary fix against current threats. Continue Reading
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News
22 Sep 2021
Symantec: Staging activity observed on Exchange servers
Threat actors appear to be targeting Microsoft Exchange servers with pre-ransomware activity, including one attempt to exfiltrate data. Continue Reading
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Definition
27 Aug 2021
Wired Equivalent Privacy (WEP)
Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b. Continue Reading
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Definition
23 Aug 2021
MD5
The MD5 (message-digest algorithm) hashing algorithm is a one-way cryptographic function that accepts a message of any length as input and returns as output a fixed-length digest value to be used for authenticating the original message. Continue Reading
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News
17 Aug 2021
Many Exchange servers still vulnerable to ProxyLogon, ProxyShell
Tens of thousands of Exchange servers are still vulnerable to ProxyLogon and ProxyShell, and security researchers estimate honeypots represent only a small slice of those systems. Continue Reading
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News
17 Aug 2021
Palo Alto Networks: Personal VPNs pose risks to enterprises
Researchers from Palo Alto Networks published a new report detailing the risks that personal VPNs pose to enterprise networks, including evasion tactics to bypass firewalls. Continue Reading
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News
04 Aug 2021
Researchers crack new Let's Encrypt validation feature
Multiperspective validation can be thwarted with a traffic-throttling technique that could lead to attackers obtaining digital certificates for domains they don't own. Continue Reading