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Topic

Infostealer Malware

Malware families whose primary objective is harvesting credentials, wallets, documents and browser data for exfiltration.

Current stories

securityConfirmed2 publishers

FakeGit rewrote more than 13,000 GitHub repos in 34 hours to spread SmartLoader

FakeGit's operator re-aimed more than 13,000 existing GitHub repositories at the SmartLoader malware in 34 hours, Apiiro found. At least 700 of the accounts involved appear to belong to legitimate developers, so a credible-looking owner is weak evidence that a download is safe.

Reality

Evidence55
Adoption
Not scored
Hype gap+10
Incentives45
Confidence60
securityOne report1 publisher

ANSSI traces theft of data on 600,000 French taxpayers and firms to stolen staff passwords

ANSSI says stolen staff passwords let an attacker take data on about 600,000 French taxpayers and firms, and the theft went undetected for seven weeks. Its report blames password-only portals, a flat government network and a reset that left the attacker's session open.

Reality

Evidence72
Adoption
Not scored
Hype gap0
Incentives40
Confidence68
buildOne report1 publisher

ANSSI traces the DGFIP tax breach to stolen passwords on password-only staff portals

ANSSI says an attacker used dozens of stolen DGFIP staff passwords on password-only portals to take data on over 600,000 French taxpayers and businesses. For other operators, the fixes are login checks on devices they do not manage and a password reset that also ends live sessions.

Publishers:dev.to

Reality

Evidence58
Adoption
Not scored
Hype gap0
Incentives
Not scored
Confidence55
securityOne report1 publisher

Australian Signals Directorate tells AI customers to guard their own keys and sessions

Australia's Signals Directorate says attackers are using stolen AI API keys, tokens and hijacked sessions to get into organisations' AI services. Its guidance tells customers to protect those credentials themselves. In one reported case, a stolen key ran up about US$600,000 in model credits over three weeks.

Reality

Evidence45
Adoption
Not scored
Hype gap+15
Incentives
Not scored
Confidence50
securityOne report1 publisher

Stolen AI session cookies survive a password reset, SOCRadar's exposure report says

SOCRadar tied 5,434 infostealer records for AI tools to 1,500 corporate email addresses at 482 large enterprises. The report says those AI accounts belong under the same sign-on and session controls as a company's identity provider and code repositories.

Reality

Evidence35
Adoption
Not scored
Hype gap+35
Incentives85
Confidence40
securityOne report1 publisher

Stolen ChatGPT sessions turn up at 358 of 482 companies in SOCRadar's stealer-log study

SOCRadar found captured ChatGPT sessions at 358 of the 482 companies whose AI accounts turned up in 90 days of infostealer logs. The firm ties the spread to shadow AI, with employees opening work-email accounts that IT never sees.

Reality

Evidence45
Adoption
Not scored
Hype gap+15
Incentives
Not scored
Confidence45
securityOne report1 publisher

New ransomware crew n0n threatens to destroy the backups of victims who refuse to pay

n0n, a ransomware crew first seen September 18, listed over a dozen victims in four days and threatens to wipe the backups of those who refuse to pay. Whether it can depends on what its escalated admin accounts reach.

Reality

Evidence35
Adoption
Not scored
Hype gap+25
Incentives
Not scored
Confidence40
securityConfirmed5 publishers

Stolen logins, not a SaaS breach: nine enterprises' Entra directories are now for sale

A seller using the name TheHatman is offering employee directory exports from nine named enterprises. Hudson Rock ties the theft to infostealer credentials, not a compromise of the provider.

Perspective Coverage

5 publishers
Builder
Builder 25%
Operator
Operator 61%
Investor
Investor 14%

Reality

Evidence55
Adoption
Not scored
Hype gap+30
Incentives50
Confidence60
securityConfirmed3 publishers

WeedHack lost its C2 and kept its funnel: ten fake Minecraft sites still convert victims

McAfee says the WeedHack stealer's control server is dead and its renter dashboard gone, but ten impersonation sites and the search rankings behind them are still delivering victims.

Perspective Coverage

3 publishers
Builder
Builder 18%
Operator
Operator 77%
Investor
Investor 5%

Reality

Evidence55
Adoption40
Hype gap+15
Incentives55
Confidence60
securityConfirmed7 publishers

Commodity infostealers are now cashing out stolen Claude sessions

Anthropic is signing affected users out, stripping saved payment methods and issuing refunds after someone began pulling Claude cookies out of ordinary stealer logs and spending other people's quota.

Perspective Coverage

7 publishers
Builder
Builder 19%
Operator
Operator 72%
Investor
Investor 9%

Reality

Evidence55
Adoption
Not scored
Hype gap+10
Incentives40
Confidence60
securityConfirmed5 publishers

A hijacked HBO Max Reddit account pushed 108 ClickFix ads to Windows and macOS users

Hudson Rock and ADAMnetworks link the ads to an operation they call PasteSwitch, which hands Windows and macOS visitors different paste-this-command lures and swaps payloads on the backend depending on who arrives.

Perspective Coverage

5 publishers
Builder
Builder 29%
Operator
Operator 65%
Investor
Investor 6%

Reality

Evidence74
Adoption
Not scored
Hype gap+8
Incentives50
Confidence72
securityConfirmed3 publishers

Compromised Ukrainian business sites are serving a ClickFix lure that installs through msiexec

Arctic Wolf Labs found injected iframes on real Ukrainian business sites showing a Ukrainian-language fake Cloudflare check that copies a Windows Installer command for the visitor to paste into Run. Its exposed panel logged 557 views.

Perspective Coverage

3 publishers
Builder
Builder 30%
Operator
Operator 64%
Investor
Investor 6%

Reality

Evidence68
Adoption14
Hype gap+8
Incentives35
Confidence64
securityConfirmed4 publishers

Rapuncel ships a Microsoft-attested kernel driver built to terminate 145 security products

LastPass traced a fake Authenticator hosted on GitHub to a months-long impersonation campaign that spoofed at least 40 organizations, including its own brand. The server steering victims to the download was still being updated in September.

Perspective Coverage

4 publishers
Builder
Builder 27%
Operator
Operator 64%
Investor
Investor 9%

Reality

Evidence68
Adoption
Not scored
Hype gap+15
Incentives40
Confidence70
securityOne report1 publisher

MacSync now pipes a public iCloud calendar into zsh to stage its Mac payload

Kaspersky says the macOS stealer it first tracked as Mac.c has swapped script droppers for FAT Mach-O binaries in a chain found in September 2026, and its loader now reads shell commands out of a public iCloud calendar file.

Publishers:securelist.com

Reality

Evidence68
Adoption32
Hype gap0
Incentives58
Confidence58
leadershipOne report1 publisher

A Microsoft-attested driver terminated 145 antivirus processes from kernel mode

LastPass and Delphos Labs say a single malware-as-a-service kit impersonated at least 40 companies on GitHub, and the kernel driver it delivered was Microsoft-attested and undetected by every engine on VirusTotal.

Publishers:blog.lastpass.com

Reality

Evidence62
Adoption48
Hype gap+12
Incentives68
Confidence55
securityOne report1 publisher

NovaCookies rents real-time Microsoft 365 session theft for $320 a month

Island says the adversary-in-the-middle service runs on at least 755 domains against hundreds of organizations. The session it steals arrives after an authentication the identity provider records as entirely normal.

Reality

Evidence45
Adoption58
Hype gap+18
Incentives65
Confidence55
securityOne report1 publisher

One infected device at a smart meter vendor held logins to 167 utility metering tenants

SpyCloud measured stolen-credential exposure across 10,000 EPA-registered water and wastewater organizations and found it at nearly one in five, with the sharpest single case sitting on a supplier's machine.

Publishers:cyberscoop.com

Reality

Evidence58
Adoption25
Hype gap+18
Incentives72
Confidence52

Earlier coverage

  1. RevStealer spread via fake free Claude Opus 5 desktop build on GitHub

    Security · September 1, 2026 · Confirmed2 publishers

  2. Agent Tesla v4 hides in emoji and never hits disk: an email-rule problem, not a new-malware one

    Security · August 21, 2026 · Confirmed2 publishers