Credential Theft
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PyPI Lightning package hit by credential-stealing malware
Python package Lightning was compromised on PyPI, with two malicious releases published on April 30, 2026. Security researchers said the code targeted developer credentials and could spread through package ecosystems.
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Python backdoor DEEP#DOOR uses tunneling service to hide remote access
Researchers disclosed DEEP#DOOR, a Python backdoor that uses a public tunneling service for command and control, steals credentials and includes multiple persistence and defense evasion features.
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UNC6692 Uses Microsoft Teams Help Desk Impersonation to Push Custom Malware
UNC6692 used Microsoft Teams help desk impersonation, email bombing and a custom malware chain to target corporate users, according to Mandiant. The activity included credential harvesting, remote access, tunneling and later-stage network movement.
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Bitwarden CLI hit by npm supply chain compromise in Checkmarx-linked campaign
Bitwarden said its CLI package was briefly compromised on npm on April 22, 2026, in a supply chain attack that targeted developer secrets and CI/CD credentials through version 2026.4.0.
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Malicious npm packages spread self-propagating worm through stolen developer tokens
Researchers found a self-propagating npm supply chain worm in April 2026 that stole developer secrets, reused npm tokens to publish poisoned packages and also included PyPI propagation logic.
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DeepLoad malware uses ClickFix lure and WMI to spread and steal credentials
A new DeepLoad malware campaign is using ClickFix lures, Windows tools and WMI to steal credentials, hide activity and reinfect cleaned hosts, according to a technical analysis from ReliaQuest.
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Phishing campaign targets TikTok for Business accounts with bot-blocking pages
A phishing campaign is targeting TikTok for Business accounts with bot-blocking pages that redirect through Google Storage and use a Cloudflare Turnstile check, then present fake login pages designed to capture credentials and session cookies.
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CL-UNK-1068 espionage campaign targets critical sectors across Asia
Palo Alto Networks Unit 42 reported a years-long CL-UNK-1068 campaign that targeted critical sectors across Asia, using web server exploits, web shells and credential theft tools to steal sensitive files and maintain persistent access.
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Mustang Panda deploys updated COOLCLIENT backdoor to steal endpoint data
An updated COOLCLIENT backdoor linked to Mustang Panda was used in 2025 to steal keystrokes, browser credentials and files from government endpoints across Myanmar, Mongolia, Malaysia and Russia, according to a technical analysis by Kaspersky.
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Phishing campaign leverages stolen credentials to deploy legitimate RMM for persistent access
Researchers reported a dual-wave phishing campaign that harvests Outlook, Yahoo and AOL credentials to register with LogMeIn and deploy LogMeIn Resolve via a signed executable named GreenVelopeCard.exe to maintain persistent remote access.
