The Russian state-sponsored hacking group Laundry Bear, also known as Void Blizzard, is exploiting an Exchange Outlook Web Access vulnerability in email campaigns to deliver a sophisticated backdoor ...

Russian state hackers are using a maximum-severity vulnerability in Microsoft’s Outlook’s Exchange Server to backdoor ...

Russian hackers exploit CVE-2026-42897 in OWA to deploy OWAReaper, a browser implant that persists through credential ...

The NCSC and partners warned of a novel phishing technique being deployed against high-profile users of Zimbra's ...

The OWAReaper implant can establish server-side mailbox permissions that remain after credentials are changed and affected ...

OWAReaper abuses CVE-2026-42897 to steal OAuth tokens, alter mailbox permissions, and persist inside Exchange accounts.

OWAReaper malware, deployed by Russian state hackers Laundry Bear against US and European government agencies and ...

Opening a booby-trapped message unleashes a browser implant that can survive password changes and device rebuilds ...

CERT-UA links UAC-0099 to a fake Notepad++ plugin that deploys BURNYBEAR and MATCHBOIL.V2, with persistence running every ...

A Russia-aligned espionage group has resurfaced after months without observed activity, using a half-click exploit against on-premises Outlook Web Access (OWA) to plant a browser-resident implant and ...

Any data that enters your system from outside a trust boundary should be treated as untrusted until proven otherwise. That includes form fields, API payloads, file uploads, headers, cookies, queue ...