Among the more dangerous of the flaws for which Microsoft released a patch this week on Patch Tuesday is a denial-of-service (DoS) vulnerability publicly disclosed back in February in the Domain Name System Security Extensions (DNSSEC) protocol. The vulnerability, identified as CVE-2023-50868 exists in a third-party DNSSEC mechanism called Next Secure Hash 3 (NSEC3) for…

Chinese espionage hackers behind an eight-month campaign to hack Barracuda email security appliances intensified their focus on high-priority targets around the time the company moved to fix the zero-day flaw behind the campaign. Within roughly a week of Barracuda’s late-May public disclosures of the zero-day flaw affording Chinese hackers access to its ESG line of…