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The Barracuda blog brings you the latest news, research, and insights you can’t get anywhere else.
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News
Malware signing: When trust becomes an attack surface
1+ mon, 1+ week ago (496+ words) When malware carries a valid signature, it may generate fewer warnings, gain a stronger reputation score, blend in with legitimate software, and in some cases bypass controls that rely heavily on publisher trust. The malware itself remains malicious, but it…...
The protection problem: Why "patch available" doesn't mean "system secure"
1+ mon, 1+ week ago (879+ words) So far this year, the National Institute of Standards and Technology (NIST) has received over 46,000 common vulnerabilities and exposure (CVE) reports, with 8,022 alone in June. And this is just the tip of the iceberg. To date in 2026, the agency has…...
LogoKit phishing-as-a-service becomes a real-time deception platform
1+ mon, 3+ week ago (892+ words) The evolution of LogoKit highlights how phishing platforms continue to evolve and what this means for defenders and their security strategies. Barracuda researchers have analyzed recent LogoKit campaigns. The attacks feature common phishing themes, such as warnings about passwords or…...
7 Real email attacks Barracuda blocked before the inbox
1+ mon, 2+ week ago (1107+ words) What the recipient saw. A polished fake FedEx notice. Recipient and organization details anonymized. A pixel-perfect FedEx “package reported missing” notice manufactured urgency and offered one obvious action: a “View Tracking Status” button. That button did not lead to FedEx…...
None and done? kittykatkrew’s short-lived ransomware play
1+ mon, 3+ week ago (1145+ words) What makes kittykatkrew worth profiling isn't its body count—it's what the group reveals about how new actors try to build credibility in the modern ransomware economy. The branding is deliberate, the timing is suspicious, and the technical evidence suggests…...
When cyberattacks turn physical: Why ransomware now includes threats of violence
2+ mon, 3+ day ago (572+ words) Cyberattacks have always had real‑world consequences. A ransomware incident can halt production, delay patient care or shut down public services. But until recently, most attacks relied strictly on digital leverage: encrypt data, threaten to leak it and demand payment....
Near real-time patching: Why AI is changing app security
2+ mon, 1+ week ago (318+ words) Cybersecurity teams need to prepare now for a forthcoming onslaught of vulnerabilities that will need to be remediated much faster than ever before. Like it or not, application security now needs to be maintained in near real time. In effect,…...
AI-powered email attacks: Red Team Report on phishing, clickFix & MFA bypass
3+ mon, 9+ hour ago (1278+ words) Barracuda Managed XDR’s Red Team runs internal simulations of real-world threats, providing security teams and researchers with insight into how attacks unfold. The Red Team Report is part of Barracuda Research — Barracuda’s threat intelligence arm. The Red Team attack simulation…...
The defender's playbook for LLM-powered vulnerability discovery
3+ mon, 1+ day ago (867+ words) My last article on how attackers will behave showed what they’ll do once LLMs flood the system with new Common Vulnerabilities and Exposures (CVEs). This essay looks at what defenders could do in response. Some moves are obvious. Others break…...
How China-linked threat actors obtain zero-day vulnerabilities
3+ mon, 3+ week ago (834+ words) A zero-day vulnerability is a previously unknown software flaw that has no available patch at the time it is exploited. That is what makes zero-day attacks so effective. There is no signature to detect and no fix to apply. Attackers…...