Dotnet
Malicious NuGet Package Impersonates Sicoob Banking SDK, Exfiltrates mTLS Certificates Through Sentry
A trojanized NuGet package posing as the official Sicoob C# SDK reads PFX certificates off disk and ships them, plus the password, to an attacker-controlled Sentry endpoint — abusing a trusted telemetry service as its exfiltration channel.
ASP.NET Core CVE-2026-40372: Signature-Bypass in DataProtection Forges Auth Cookies, Patching Alone Doesn't Close the Door
Microsoft's out-of-band patch fixes a CVSS 9.1 signature-verification bug in ASP.NET Core DataProtection that lets unauthenticated attackers forge cookies and decrypt protected payloads. Tokens minted during the exposure window stay valid after upgrade — you have to rotate the key ring.