Risky Business publishes cybersecurity newsletters and podcasts for security professionals.

Risky Bulletin: Major EoT/HoT vulnerability can bring trains to sudden stops

In other news: Researchers spot a Lazarus backdoor attack targeting crypto contracts; Spain hands Huawei control over its wiretapping system; CISA warns of CitrixBleed 2 attacks.

Risky Bulletin: Two billion eSIMs receive crucial security patch

In other news: China's cyber militias go on the offensive; four Scattered Spider members detained over UK retail attacks; Russian basketball player detained in ransomware case.

Four Key Players Drive Scattered Spider

Your weekly dose of Seriously Risky Business news is written by Tom Uren and edited by Patrick Gray. It's supported by Lawfare with help from the William and Flora Hewlett Foundation. This week's edition is sponsored by Knocknoc. You can hear a podcast discussion of this

Risky Bulletin: Browser extensions hijacked for web scraping botnet

In other news: Hafnium APT member arrested in Italy; Russian drone volunteer group gets hacked; Satanlock shuts down and leaks all victim data.

Risky Bulletin: Chinese researchers claim to find new North American APT

In other news: SEC and SolarWinds seek settlement; C&M hack linked to malicious insider; Luis Vuitton discloses breach.

Risky Bulletin: Hunters International ransomware shuts down and releases decryption keys

In other news: FBI investigates ransomware negotiator; Spain arrests government hackers; hackers steal $185 million from Brazilian financial institutions.

Why Iran Is a Scaredy Cat Cyber Chicken

Your weekly dose of Seriously Risky Business news is written by Tom Uren and edited by Patrick Gray. It's supported by Lawfare with help from the William and Flora Hewlett Foundation. This week's edition is sponsored by Sandfly Security. You can hear a podcast discussion of

Risky Bulletin: US sanctions another Russian bulletproof hosting provider

In other news: The ICC discloses security breach; US dismantles 29 DPRK laptop farms; Chinese student gets jailed in the UK for SMS blasting in London.

Risky Bulletin: Scattered Spider goes after aviation sector

In other news: Russia throttles Cloudflare traffic; Mexican cartel hired hackers to track FBI official; Canada tells Hikvision to cease operations.

Risky Bulletin: Phishers abuse forgotten Direct Send feature

In other news: Patient's death linked to Synnovis ransomware attack; BreachForums leadership arrested in France; home users get one free year of Windows 10 Extended Security Updates.

Comparing the American and Chinese 0day Pipelines

Your weekly dose of Seriously Risky Business news is written by Tom Uren and edited by Patrick Gray. It's supported by Lawfare with help from the William and Flora Hewlett Foundation. This week's edition is sponsored by Authentik. You can hear a podcast discussion of this

Risky Bulletin: Hackers breach Norwegian dam, open valve at full capacity

In other news: US House bans WhatsApp on Congress devices; Russia plans a national IMEI database; four REvil members released for time served.