Cyber Attack History

APT29 Inside TeamViewer: 2024’s Calmest, Most Instructive Breach

Post author:Hmmnm
Post published:June 28, 2024
Post category:Cloud & Infrastructure Identity & Phishing Security

On June 28, 2024, TeamViewer disclosed that a state-sponsored actor — widely reported as Russia's APT29 — had breached its corporate IT network through a standard employee's credentials, and that the remote-access product itself, and every customer, stayed untouched. This account reconstructs the hours-to-containment timeline, explains why corporate/product segmentation carried the day, places the intrusion in Cozy Bear's patient espionage season, and draws the anti-SolarWinds comparison that made this 2024's most instructive breach.

Polyfill.io Hijack: 100,000+ Sites Inherited a Malicious Script

Post author:Hmmnm
Post published:June 27, 2024
Post category:Security Supply Chain Security Web & API Security

When Sansec disclosed in late June 2024 that the polyfill.io domain had been sold and its hosted script rewritten to inject mobile-only scam redirects, hundreds of thousands of embedded sites — WordPress themes among them — discovered they had inherited an implant, invisible to desktop QA by design. This account traces the Funnull acquisition chain, the conditional payload mechanics, Cloudflare's mirror intervention, the DNS-harassment retaliation, the 2025 arrests, and the inventory lesson every site owner still owes themselves.

Brain Cipher vs Indonesia’s Data Centers: A National Ransomware Reckoning

Post author:Hmmnm
Post published:June 26, 2024
Post category:Cloud & Infrastructure Ransomware & Malware Security

In June 2024, the Brain Cipher crew — running a LockBit 3.0 builder clone — encrypted Indonesia's National Data Center, disrupting 200+ government services from immigration to licensing, then released a decryptor with an apology-flavored admission that extortion failed, then hit again during recovery. This account covers the copycat-crew economics behind the operation, why one shared-tenant data center meant national outage, the second-encryption lesson about persistence, and the segmented-architecture rebuild Indonesia promised next.

CDK Global Ransomware: US Car Dealerships Run on Pen and Paper

Post author:Hmmnm
Post published:June 22, 2024
Post category:Emerging Tech & Architecture Ransomware & Malware Security

On June 19, 2024, ransomware hit CDK Global's dealer management platform — the operational nervous system of ~15,000 North American dealerships — and a second strike during recovery extended the outage for weeks while finance desks, service bays and OEM ordering reverted to paper and fax. This account covers the June 19/22 double-hit timeline, the billion-dollar industry loss estimates, why DMS lock-in made fallback manual rather than competitive, and the concentration-risk docket the incident left for every regulator to cite.

Snowflake Extortion: 165+ Customers, One Credential Wave

Post author:Hmmnm
Post published:June 19, 2024
Post category:Cloud & Infrastructure Identity & Phishing Security

On June 19, 2024, Mandiant's public advisory named UNC5537 as the crew behind the Snowflake extortion wave — 165+ victim organizations entered with infostealer credentials against MFA-less tenants, datasets extorted through listings and a dedicated leak market researchers dubbed Snow:Bay. This piece condenses the TTP catalogue, the backyard economics of stolen logs, the aftermarket that changed notification obligations forever, and the single control that would have prevented every confirmed intrusion.

Snowflake-Ticketmaster: The Cloud-Secure Myth Breaks

Post author:Hmmnm
Post published:May 30, 2024
Post category:Cloud & Infrastructure Identity & Phishing Security

Live Nation's May 2024 SEC filing confirmed criminal access to roughly 560 million Ticketmaster customer records — taken not by exploiting Snowflake but by logging into it with infostealer-derived credentials on a tenant without MFA. This account explains the UNC5537 tradecraft that chained $20 stealer logs into Fortune-500 data lakes, why the 'no Snowflake breach' defense only half-worked, what the ~560M-record dataset contained, and the mandatory-MFA wave that reshaped SaaS identity through 2024.

Sisense Breach: CI Credentials, AWS Keys and a CISA Advisory

Post author:Hmmnm
Post published:April 26, 2024
Post category:Cloud & Infrastructure Security Supply Chain Security

On April 24, 2024, CISA and the FBI advised every Sisense customer to rotate credentials after attackers compromised the BI vendor's development environment — and by week's end, Sisense-issued AWS keys were circulating publicly. This piece reconstructs the five-day arc from detection to contained, explains why business-intelligence platforms are credential funnels that turn vendor CI/CD breaches into customer incidents, and extracts the third-party-risk doctrine the episode left behind for every embedded-analytics supply chain.

PuTTY ECDSA Nonce Bias: How 71 Signatures Exposed Your SSH Key

Post author:Hmmnm
Post published:April 16, 2024
Post category:Cryptography & PKI Security

PuTTY's April 2024 advisory for CVE-2024-31497 read like a physics problem: the terminal's ECDSA implementation biased nonces on NIST P-521, so roughly 71 captured SSH signatures suffice for a lattice attack that recovers the private key. This piece explains the Hidden Number Problem math, why archived PCAP and DLP session capture retroactively weaponized years of traffic, the 0.81 deterministic-nonce fix, and the brutal rotation drill that made every P-521 key used through Pageant presumptively burned.

AT&T 73M Leak: The 2019 Dataset That Resurfaced Free

Post author:Hmmnm
Post published:April 2, 2024
Post category:Identity & Phishing Security

March 2024's 73-million-record AT&T leak was an old wound reopened: a 2019-era vendor-workspace dataset, shopped unsuccessfully in 2021, finally dumped free on a hacking forum with SSNs and account details intact. This account disentangles it from the concurrent Snowflake campaign, explains why free publication maximizes criminal utility, maps the 7.6 million passcode resets, and follows the extortion thread that later surfaced in DOJ filings.

The XZ Utils Backdoor: Inside the Almost-Catastrophe

Post author:Hmmnm
Post published:March 31, 2024
Post category:Security Supply Chain Security

The most patient supply-chain attack ever caught — a two-year maintainer infiltration that planted an SSH backdoor into xz-utils release tarballs, discovered in March 2024 only because one engineer noticed 500 milliseconds of latency. This account traces the Jia Tan persona from helpful contributor to release engineer, the test-file obfuscation and build-stage injection, the systemd/sshd target chain, the near-miss that kept stable distros clean, and the trust-model reforms that rippled through open source.

LockBit Takedown: Operation Cronos and Its Awkward Aftermath

Post author:Hmmnm
Post published:February 23, 2024
Post category:Emerging Tech & Architecture Ransomware & Malware Security

February 2024's Operation Cronos seized LockBit's infrastructure across a dozen countries — and then the leaks showed how long the FBI had been inside. This account covers the covert access, the sting timing driven by UK hospital targeting, the servers and affiliate accounts taken down, the hurried rebrand to LockBit 4.1, the affiliate diaspora to RansomHub and Akira, and the awkward questions the takedown's trolling raised about reading crime statistics.

Change Healthcare ALPHV: The Ransomware That Broke US Healthcare

Post author:Hmmnm
Post published:February 23, 2024
Post category:Emerging Tech & Architecture Ransomware & Malware Security

One ALPHV/BlackCat intrusion in February 2024 froze claims and pharmacy payments across US healthcare for weeks — the single most consequential ransomware attack of the year. This account covers the nine-day dwell time, the $22 million ransom payment and the exit-scam double-cross that brought RansomHub back for seconds, the eventual disclosure of hundreds of millions of records, and why one processor's central position converted a single encryptor into a national healthcare liquidity crisis.