When KrebsOnSecurity broke the news on Oct. 20, 2023 that identity and authentication giant Okta had suffered a breach in its customer support department, Okta said the intrusion allowed hackers to steal sensitive data from fewer than one percent of its 18,000+ customers. But today, Okta revised that impact statement, saying the attackers also stole...

One of the cybercrime underground’s more active sellers of Social Security numbers, background and credit reports has been pulling data from hacked accounts at the U.S. consumer data broker USinfoSearch, KrebsOnSecurity has learned. Since at least February 2023, a service advertised on Telegram called USiSLookups has operated an automated bot that...

Prosecutors in Finland this week commenced their criminal trial against Julius Kivimäki, a 26-year-old Finnish man charged with extorting a once popular and now-bankrupt online psychotherapy practice and thousands of its patients. In a 2,200-page report, Finnish authorities laid out how they connected the extortion spree to Kivimäki, a notorious hacker...

Microsoft today released updates to fix more than five dozen security holes in its Windows operating systems and related software, including three “zero day” vulnerabilities that Microsoft warns are already being exploited in active attacks. The zero-day threats targeting Microsoft this month include CVE-2023-36025, a weakness that allows malicious...

In the summer of 2022, KrebsOnSecurity documented the plight of several readers who had their accounts at big-three consumer credit reporting bureau Experian hijacked after identity thieves simply re-registered the accounts using a different email address. Sixteen months later, Experian clearly has not addressed this gaping lack of security. I know...

Last week, KrebsOnSecurity broke the news that one of the largest cybercrime services for laundering stolen merchandise was hacked recently, exposing its internal operations, finances and organizational structure. In today’s Part II, we’ll examine clues about the real-life identity of “Fearlless,” the nickname chosen by the proprietor of the SWAT USA...