A prompt injection vulnerability paired with other flaws can turn a Google search into a full attack chain that could threaten enterprise networks.
The suspected India-linked threat group targets governments, telecom, and critical infrastructure using spear-phishing, old vulnerabilities, and rapidly rotating infrastructure to maintain persistent access.
Tracking pixels let social media companies spy on their users even after they click over to advertiser sites, gleaning credit card info, geolocations, and more, according to an analysis.
Credential theft soared in the second half of 2025, thanks in part to the industrialization of infostealer malware and AI-enabled social engineering.
When technical expertise meets clear communication, cybersecurity teams thrive. Learn how to foster trust and collaboration across diverse working groups.
Ransomware actors are ditching Cobalt Strike in favor of native Windows tools, as payment rates hit record lows and data theft surges.
In an unsuccessful phishing attack, threat actors leveraged trusted brands and domains to try to redirect a C-suite executive at Outpost24 to give up his credentials.
In a recent attack, the group showcased stealthier cross-network activity, thanks to its use of a new BYOVD technique and other tools.
Researchers uncovered an extensive cyber espionage campaign that used novel backdoors and familiar evasion techniques to maintain persistent access to regional targets.
Dozens of updated, malicious GlassWorm extensions have infested Open VSX, threatening software development supply chains.
Discover how Franz Regul, former CISO for the Paris 2024 Olympics, tackled unique cybersecurity challenges to protect the Games from evolving threats.
A social engineering campaign impersonating PayPal and Amazon uses customer support interactions to acquire sensitive info.
The excitement around Cisco's latest SD-WAN bugs has inspired some light fraud, misunderstandings, and overlooked potential hazards.
Threat actors target nonprofits due to security gaps and highly coveted information, but a lack of sufficient data makes it difficult to grasp the entire picture.
A hacktivist group with links to Iran's intelligence agencies is claiming responsibility for a data-wiping attack against Stryker, a global medical technology company based in Michigan. News reports out of Ireland, Stryker's largest hub outside of the United States, said the company sent home more than 5,000 workers there today. Meanwhile, a voicemail message at Stryker's main U.S. headquarters says the company is currently experiencing a building emergency.
Microsoft Corp. today pushed security updates to fix at least 77 vulnerabilities in its Windows operating systems and other software. There are no pressing "zero-day" flaws this month (compared to February's five zero-day treat), but as usual some patches may deserve more rapid attention from organizations using Windows. Here are a few highlights from this month's Patch Tuesday.
AI-based assistants or "agents" -- autonomous programs that have access to the user's computer, files, online services and can automate virtually any task -- are growing in popularity with developers and IT workers. But as so many eyebrow-raising headlines over the past few weeks have shown, these powerful and assertive new tools are rapidly shifting the security priorities for organizations, while blurring the lines between data and code, trusted co-worker and insider threat, ninja hacker and novice code jockey.
In early January 2026, KrebsOnSecurity revealed how a security researcher disclosed a vulnerability that was used to assemble Kimwolf, the world's largest and most disruptive botnet. Since then, the person in control of Kimwolf -- who goes by the handle "Dort" -- has coordinated a barrage of distributed denial-of-service (DDoS), doxing and email flooding attacks against the researcher and this author, and more recently caused a SWAT team to be sent to the researcher's home. This post examines what is knowable about Dort based on public information.
Most phishing websites are little more than static copies of login pages for popular online destinations, and they are often quickly taken down by anti-abuse activists and security firms. But a stealthy new phishing-as-a-service offering lets customers sidestep both of these pitfalls: It uses cleverly disguised links to load the target brand's real website, and then acts as a relay between the target and the legitimate site -- forwarding the victim's username, password and multi-factor authentication (MFA) code to the legitimate site and returning its responses.
For the past week, the massive "Internet of Things" (IoT) botnet known as Kimwolf has been disrupting the The Invisible Internet Project (I2P), a decentralized, encrypted communications network designed to anonymize and secure online communications. I2P users started reporting disruptions in the network around the same time the Kimwolf botmasters began relying on it to evade takedown attempts against the botnet's control servers.