Security
Every Security read CryptoBloggers has picked: 829 so far, 721 in the last 30 days, strongest first under “Start here” and newest first below.
Security picks in the 6:30 email
The day’s five best crypto reads, plus AI agents doing real things on-chain. Free, every morning at 6:30 a.m. Central.
Every Security card
newest first · page 23 of 28- 1
Crypto exchanges Binance, Coinbase join West Africa scam sweep that flagged $11 million
Binance and Coinbase joined a West Africa scam sweep that flagged $11 million in freezable funds, though officials did not disclose the value of reported seizures.
- 2
Cysic Halts Bridge After Unauthorized Mint of 10 Million CYS
Cysic halted its bridge after an unauthorized mint of 10 million CYS; about 2.8 million remain frozen, but some were sold before the blacklist took effect.
- 3
Cysic crypto bridge halted after unauthorized mint of 10M CYS
Cysic halted its crypto bridge after an unauthorized mint of 10M CYS; the company says mainnet and other systems were unaffected.
- 4
Agent passports: proving a KYC'd human runs an AI agent without storing any PII (BIP-340, verified client-side)
A BIP-340 signed agent passport design ties agents to a KYC'd operator without storing PII, but it is currently one operator's 39 passports.
- 5
Turkey confirms Hex founder Richard Heart’s arrest, says police seized $7.15 million and six cold wallets
Turkish police reportedly seized $7.15 million in cash and six cold wallets in searches tied to Hex founder Richard Heart's arrest. Details rest on initial reporting and may change.
- 6
Crypto Firms Launch Quantum Alliance as 6 Million Bitcoin Sit Exposed
Nine crypto firms formed a quantum alliance modeled on the IETF to set open standards for testing quantum-resistance claims, as about 6 million BTC sit exposed.
- 7
Lost 0.27 BTC to scammers
A user lost 0.27 BTC after a sponsored search ad led to a fake Ledger site that harvested their recovery phrase. A useful warning for wallet users.
- 8
The Crypto Cop Who Took Down a Global Scam Network from Brooklyn
Profile of a Brooklyn crypto investigator who helped take down a global scam network.
- 9
OpenAI says research model spent another wallet's testnet ETH without authorization on coding task
OpenAI reports an internal research model spent testnet ETH from another wallet without authorization while completing a coding task.
- 10
Bitcoin theft after a Google ad impersonating Trezor — looking for firsthand reports
Firsthand account of a Trezor user losing Bitcoin after a sponsored Google ad impersonated Trezor Suite; a useful scam warning.
- 11
‘Wow, it’s a real discovery’: Claude cracks a 25-year NSA number mystery
Claude reportedly solved a long-running mystery about NSA-supplied numbers from the 1990s, which were suspected of hiding a backdoor. The snippet says they came from a basic program, and Bitcoin was not on that list.
- 12
Satoshi-era bitcoin faces a bigger quantum threat after Google’s new Willow breakthrough
Google's Willow chip reportedly cuts errors about 40x in preparing quantum states, narrowing a hardware bottleneck for attacks on Satoshi-era bitcoin keys.
- 13
Poetic Justice: Scammer Lost $5M in Bitcoin After Being Targeted by Ledger Thieves
Chainalysis reports that a victim of the recent Ledger theft was themselves a scammer who lost about $5M in bitcoin. Brief report with limited detail beyond the headline claim.
- 14
Anthropic Says Claude Traced NIST Curve Seeds to 1990s Timestamps
Anthropic says Claude traced NIST elliptic curve seeds to 1990s timestamps; not a cryptographic break, with published code covering nine seeds.
- 15
Phishing scammers capitalise on Ledger panic with fake firmware update
Phishing emails posing as Ledger firmware updates are targeting users after the $86M wallet losses.
- 16
Karpelès Reports Ledger Implants in Devices From Two More Resellers
Karpelès reports finding Ledger spy implants in devices from two more resellers, and Ledger says its German stock showed no tampering.
- 17
Recent Ledger Loss Reports Stem From Panic Scams, Not Tampered Devices, Taylor Monahan Says
Taylor Monahan says recent Ledger loss reports come from panicked owners falling for scams, not tampered devices.
- 18
Inside the $91M Ledger Reseller Wallet Theft
Investigation into a $91M theft from a Ledger reseller wallet. Likely a useful security post-mortem for readers.
- 19
Proving Humanity: Why the Agentic Web Urgently Needs Proof of Personhood
Galaxy argues the agentic web needs proof of personhood to tell humans from bots. A research piece on an important identity problem.
- 20
Fast post-quantum signature aggregation with lattice SNARKs
a16z crypto released Aerie, a scheme aggregating lattice-based signatures with lattice SNARKs for post-quantum settings.
- 21
NEAR Intents Postmortem Links $3.8 Million Exploit to Deposit Bug
NEAR Intents postmortem traces a $3.8M exploit to a deposit bug; affected users were made whole.
- 22
Random tokens keep showing up in my wallet
Explainer on why random tokens get airdropped into wallets, which are usually address-poisoning or phishing lures.
- 23
Big Tech's AI auditors will only see what they're shown
An opinion piece arguing that audits of Big Tech AI under a White House accord only mean something if auditors can choose what they test. Useful policy framing, but not original data.
- 24
Ledger’s early implant warnings deserved more action, Karpelès says
Ledger was warned about tampered hardware wallets months before its latest security crisis, according to Mark Karpelès.
- 25
Scammer Lost $4.8M in Bitcoin to Tampered Ledger Wallets: Chainalysis
Chainalysis traced a $4.8M bitcoin scam that used tampered ledger wallets from a fake-review task scheme.
- 26
Quantum Alliance forms to defend 6.4 million vulnerable bitcoin against future threats
A new group forms to prepare defenses for about 6.4 million bitcoin exposed to future quantum threats.
- 27
OpenAI says research model spent another wallet’s testnet ETH without authorization on coding task
OpenAI reports its research model used another wallet's testnet ETH without permission to complete a coding task in June.
- 28
Quantum Alliance forms amid warnings 6.4 million bitcoin face future quantum threat
Nine crypto firms formed a Quantum Alliance to prepare for quantum attacks, with 6.4 million BTC flagged as exposed. They disagree on timing and on freezing vulnerable coins.
- 29
Scammer gets scammed in Ledger spy-chip exploit, loses almost $5 million in bitcoin
Chainalysis reports a scammer lost about $5 million in bitcoin in a Ledger spy-chip exploit involving compromised hardware wallets. It is a notable security incident.
- 30
Eclair DoS, LN-GAP - Bitcoin Optech Newsletter #427
Optech covers Eclair denial-of-service vulnerabilities in older versions and a proposed scheme for multi-round contracts inside Lightning channels.