IIS

This section has all the newest information and stories about Internet Information Services (IIS), which is Microsoft’s web server software. This includes news about new features, security updates, better speed, and the best ways to do things. Keep up with changes to IIS and how they affect running websites, managing servers, and deploying apps.

Hackers Breached an IIS Server and Deployed Ransomware Across the Network the Next Day

Hackers leveraged a compromised Microsoft IIS server to gain initial access and deploy a previously unseen ransomware payload across an…

2 months ago

China-Linked OP-512 Targets IIS Servers With Unique Web Shell Framework

A suspected China-linked espionage cluster dubbed OP-512 after rapidly correlating many low-fidelity events into a single high-priority incident that human…

3 months ago

BadIIS Malware Hijacks IIS Servers to Redirect Users to Illicit Sites

A new variant of the BadIIS malware that hijacks Microsoft IIS web servers to redirect users to illicit websites, highlighting…

4 months ago

Threat Report: xHunt Targets Microsoft Exchange and IIS with Custom Backdoors

The xHunt advanced persistent threat group continues to pose a significant cybersecurity risk through sophisticated attacks targeting Microsoft Exchange and…

10 months ago

IIS Servers Hijacked via Exposed ASP.NET Machine Keys — Malicious Modules Injected in the Wild

Security researchers have uncovered a sophisticated cyberattack campaign that exploited publicly exposed ASP.NET machine keys to compromise hundreds of Internet…

11 months ago

Hackers Use ASP.NET Machine Keys to Break Into IIS, Push Malicious Extensions

In September 2025, Texas A&M University System (TAMUS) Cybersecurity, a managed detection and response provider, in collaboration with Elastic Security…

11 months ago

Hackers Hijacking IIS Servers Using Malicious BadIIS Module to Serve Malicious Content

Leveraging a native IIS module named BadIIS, attackers manipulated search engine crawler traffic to poison search results and redirect legitimate…

12 months ago

Hackers Exploit IIS Servers with New Web Shell Script for Full Remote Control

Security researchers have examined a complex online shell script called UpdateChecker.aspx that was installed on compromised Internet Information Services (IIS)…

1 year ago

Hackers Exploit IIS Machine Keys to Breach Organizations

A sophisticated campaign by an initial access broker (IAB) group exploiting leaked Machine Keys from ASP.NET websites to gain unauthorized…

1 year ago

BladedFeline Exploits Whisper and PrimeCache to Breach IIS and Microsoft Exchange Servers

ESET researchers have uncovered a series of malicious tools deployed by BladedFeline, an Iran-aligned advanced persistent threat (APT) group, targeting…

1 year ago