coldcard

📊 What Happened
A vulnerability in Coldcard hardware wallets (by Coinkite) was exploited 1,367 $BTC stolen (~tens of millions USD) Impacted 1,200+ addresses Attack executed in just 41 minutes
⚠️ Immediate Response
Coinkite released a firmware patch Block confirmed:
Its Bitkey wallet was not affected
🧠 What Makes This Serious
Hardware wallets are considered top-tier security
➡️ A successful exploit challenges that assumption Speed of attack (41 mins) suggests:
Pre-planned targeting Possible automation / advanced tooling
🤖 AI Angle
Growing concern:
AI-assisted vulnerability discovery Faster exploit development cycles
➡️ Raises the stakes for:
Wallet providers Smart contract developers Security auditors
📉 Market Impact
Short-term:
Fear around wallet security Potential sell pressure from shaken confidence
Long-term:
Push toward:
Better firmware security Multi-layer protection systems
🛡️ Risk Management Takeaways
Always:
Update firmware immediately Use multisig setups for large holdings Avoid single points of failure
🎯 Conclusion
This wasn’t just a hack — it was a stress test for crypto security
➡️ Even “secure” devices can fail
➡️ Attack sophistication is rising
➡️ Security must evolve as fast as the threats
#BTC #Coldcard #crypto

A critical security flaw in Coldcard hardware wallets has triggered Bitcoin's largest on-chain movement since the FTX collapse, moving $89M worth of BTC. The bug, caused by insufficient randomness in seed phrase generation, has distorted market signals and raised serious security concerns. This event highlights the vulnerabilities in even trusted crypto storage solutions and could temporarily impact market sentiment. Traders should be cautious as on-chain analytics may show abnormal patterns. The incident serves as a stark reminder of the importance of proper wallet security practices in the crypto space.

#Bitcoin #BTC #SecurityAlert #Coldcard

The Coldcard hardware wallet hack has triggered the largest movement of sub-1 BTC transactions since the FTX collapse, with 39,600 BTC moved in small amounts according to CryptoQuant. This security breach remains active, raising concerns about potential market impacts. The scale of movement suggests significant retail holder activity, possibly indicating panic or forced transactions. Market participants should watch for increased exchange inflows from these movements, which could create selling pressure. The situation highlights the importance of wallet security and the potential for security events to impact market dynamics. As one of the largest security-related BTC movements in recent history, this event could have lasting implications for hardware wallet trust and BTC price stability in the short term.

#Bitcoin #BTC #Coldcard #Security

☠️ As a result of the Coldcard wallet vulnerability, kidnapped BTC for $38,000,000 from 500 addresses.
#Coldcard $BTC

Main reason for market volatility 👍

🚨 JUST IN: #Bitcoin stolen in the Coldcard hardware wallet incident now exceeds $88 million.

K According to the latest reports, the attack has now reached approximately:

• 1,367 $BTC stolen ( $88.6M)
• 4,500+ affected Bitcoin addresses
• Researchers say this was carried out in multiple waves of exploitation.
• The stolen BTC has reportedly not been moved yet.

What happened?

The issue is not a remote hack of Coldcard devices.

Instead, it affects seed phrases generated on specific vulnerable firmware versions. If a wallet’s recovery seed was created using an affected version, the seed may have been predictable, allowing attackers to recover the wallet and drain funds.

If you own a Coldcard:

Update to the latest firmware. ✔️

Generate a brand-new seed phrase (updating alone is not enough if your current seed was created on an affected version). ✔️

Transfer your BTC to addresses derived from the new seed. ✔️

Verify whether your device and firmware version are included in the official advisory. ✔️

This incident is another reminder that hardware wallets are only as secure as the firmware and the seed generation process behind them.
Self-custody remains one of the safest ways to hold #Bitcoin but it also means staying on top of security updates.

Always verify information through official announcements before taking action.
#BTC #Coldcard #SelfCustody $BTC

🚨 Security Update: Coldcard Vulnerability Exploited — August 2, 2026
$BTC


Following up on the Coldcard hardware wallet vulnerability we flagged last week: it's now been actively exploited, draining approximately $70M in BTC from affected users.

🤔 What happened:

Coldcard CEO Rodolfo Novak issued a public apology, confirming the company's review process failed to catch the firmware bug before it could be exploited. Emergency firmware has now been released: version 4.2.0+ for Mk3, 5.6.0+ for Mk4/Mk5, and 1.5.0Q+ for Coldcard Q.

⚠️ Critical detail for anyone affected:

Simply updating firmware does NOT secure existing funds — private keys derived from a compromised seed remain unchanged even after the update. Affected users must generate an entirely new recovery phrase on the corrected firmware and migrate their BTC to it. Security firm Galaxy has also warned that future attacks remain possible against any Coldcard-generated address from the vulnerable period.

📊 Why this matters beyond Coldcard users:

This reinforces something we discussed last week — even "cold storage" (designed to be the safer option) isn't automatically immune to every risk category. Firmware-level vulnerabilities are a different threat than remote hacking, but they're still a real risk that hardware wallet users need to stay aware of.

📌 My take: This is a sobering real-world example of the theoretical risk we covered days ago. If you use a Coldcard device, checking official channels for the exact remediation steps (new seed generation, not just firmware update) should be an immediate priority, not something to delay.

⚠️ Disclaimer: This is commentary based on public reporting, not financial or security advice. Verify directly with official Coldcard channels if affected.

#Crypto #CryptoSecurity #Coldcard #BinanceSquare

⚠️ Security alert

The Coldcard hack has triggered massive on-chain activity, with 39,600 BTC moved via small transactions. CryptoQuant notes this is the largest sub-1 BTC movement since the FTX collapse, with the attack still active.

#Coldcard #Security ‎

#coldcardexploitattackerscontrol1366btc

​🚨 CRITICAL SECURITY ALERT: EXPANDING EXPLOIT ON COLCARD USERS 🚨

​The bleeding hasn't stopped. What began with an alarming 594 BTC drained in under 30 minutes yesterday has now escalated—exploiters currently hold over 1,366.38 BTC under their control!

​Analysis from Galaxy Research confirms three distinct waves of attacks so far. The burning question every holder is asking: Is the assault over, or are more breaches incoming? Whether this is a solitary hacker deploying upgraded exploit vectors or multiple attackers capitalizing on legacy vulnerabilities dating back to March 2021, the danger is real.

​🛡️ IMMEDIATE ACTION PLAN (PROTECT YOUR ASSETS):

​Patch Right Away: Update your device firmware to the latest official release without delay.

​Generate a New Seed: Transfer your funds to a completely fresh, uncompromised seed phrase.

​Stay Proactive: Cold storage is only as safe as your security hygiene—don't wait until your wallet is drained to take action!

​Stay paranoid, stay secure, and protect your holdings! 🔒⚡

​Disclaimer: Not financial advice. Always Do Your Own Research (DYOR).

​#BTC #Coldcard #HackerAlert

$VELVET
$BEAT
$BTC

⚡ LATEST UPDATE ⚡

**Coldcard Wallet Vulnerability Losses Approach $89 Million**

Galaxy Research has identified a third wave of unauthorized fund transfers linked to a suspected Coldcard hardware wallet vulnerability, with an additional 207.73 $BTC recently moved from compromised addresses.

The total scope observed by Galaxy has grown to approximately 1,367 $BTC (valued at roughly $88.6M) across 4,585 Bitcoin addresses.

The operational method has shifted: while the initial two exploit waves consolidated funds into a few central wallets, the latest activity distributed assets across hundreds of separate addresses, complicating tracking efforts for analysts.

Galaxy emphasized that these estimates are derived from on-chain transaction analysis and victim reports rather than direct wallet audits confirming flawed seed generation. As a result, the data remains preliminary. However, risks remain elevated as public disclosure of the vulnerability may prompt other malicious actors to target wallets created with weak seed phrases.

#Bitcoin #Coldcard #CryptoNews

$NEAR $XRP

Source: Compiled

Crypto Security Update

A software vulnerability in the popular Coldcard hardware wallet has reportedly led to the theft of nearly 600 BTC, worth around $70 million. According to Chainalysis, the attack primarily targeted high-value wallets, sending another reminder that even self-custody solutions are not immune to security risks.
$NVDAB
$AAPLB

The incident highlights the importance of keeping wallet firmware updated, verifying every transaction, and following strong security practices to protect digital assets.

Security remains one of the biggest priorities in crypto. Stay cautious, stay informed, and always protect your private keys.

#Bitcoin #BTC #Coldcard #ColdcardFlawDrains594BTC

🚨$70M GONE IN 41 MINUTES - no hack, no phishing, no physical access.

Nearly 1,200 COLDCARDS wallets drained. The attacker never touched a device or stole a seed phrase. The reverse-engineered predictable randomness in flawed firmware (Mk2-Mk5, Q) to recreate private keys offline. Pure math, zero contact.

This is your reminder: NEVER hold 100% of your stack in one wallet or one brand. Hardware wallets aren't infallible, diversify across devices, use multi-sig, split your cold storage. One flaw = total loss.

If you're on affected Coldcard firmware, migrate NOW.
Not your keys, not your coins. But also: not your diversification, not your safety.🔐

#bitcoin #BTC #Coldcard

🚨 Coldcard Flaw Drains 594 BTC

A newly reported security flaw linked to Coldcard wallets has resulted in the loss of approximately 594 BTC, raising fresh concerns about hardware wallet security and operational risks.

⚡ THOR Edge
594 BTC reportedly drained through the exploit.
Hardware wallets remain highly secure, but improper setup, compromised firmware, or user errors can still create attack vectors.
The incident is a reminder that cold storage isn't immune to operational vulnerabilities.

🎯 THOR Verdict
This event is likely to increase scrutiny on wallet security practices rather than weaken confidence in self-custody itself. Expect the crypto community to closely monitor the investigation and any vendor response.

#bitcoin #Coldcard #IDOL #ColdcardFlawDrains594BTC #HedgeFundsAddBullishOilBets

$AKE
$EPIC
$IDOL

📉 Coldcard Wallet Vulnerability Linked to $70 Million Bitcoin Theft

A security flaw in the widely used Coldcard hardware wallet has reportedly led to the theft of nearly 600 $BTC BTC, worth around $70 million. According to Chainalysis, the attack appears to have targeted high-value wallets, raising fresh concerns about the reliability and security of self-custody solutions for crypto holders.

For context, $BTC BTC is currently trading around $62,717.24 on Binance, slightly down over the last 24 hours. Today’s range is $62,275.00 to $63,150.00, which helps show the market backdrop around a 600 $BTC BTC event of this size.
#ColdcardFlawDrains594BTC #BTC #Coldcard

🚨 Cold storage was supposed to mean untouchable.

⚠️ It didn't.

$71,000,000+ in BTC — gone. Not phished. Not hacked at the device. Drained from wallets that never left a safe.

💀 Cold. Offline. Untouched. And still emptied.

The old belief: hardware wallets are immune because attackers need physical access.

The new reality: entropy failed silently, and math did the rest.

Coldcard's 2021 firmware bug collapsed seed randomness down to a guessable range. No phishing link. No malware. No device compromise required.

The attacker never touched a single wallet.

⏱️ 1,196 addresses.
41 minutes.
Over 1,082 BTC swept.

Predictability killed more wallets than any hacker ever could.

🔓 The uncomfortable truth: a wallet is only as cold as its randomness. Offline storage protects against network attacks — it does nothing against a flawed random number generator baked in at manufacture.

The question isn't whether hardware wallets are safe. The question is whether the entropy generating the seed was ever truly random in the first place.

📌 Recommended action:
1️⃣ Update firmware immediately (Mk3: 4.2.0+, Mk4/Mk5: 5.6.0+, Q: 1.5.0Q+)
2️⃣ Generate a brand-new seed — firmware updates do NOT fix old seeds
3️⃣ Migrate all funds off the old address before touching it again
4️⃣ Where possible, add a dice-rolled passphrase for extra entropy

🔥 Rolling your own dice at setup? Those wallets survived untouched.

What does "cold storage" actually protect against, if the randomness behind it was never secure?

$BTC #Bitching #Coldcard #CryptoSecurity #DeFi
Not financial advice. DYOR.

#coldcardexploitattackerscontrol1366btc
Yesterday: 594 BTC was lost in 25 minutes. 😱
Today: the intruders are controlling 1,366.38 BTC! 📉📉📉
“Galaxy Research” says it’s officially 3 waves of attacks. Is it over? 🕵️‍♂️ Maybe it’s a single hacker with a better tool, or maybe more joined the party! Absolute chaos for Coldcard users since March 2021. 💸
What do you do? Update the firmware now, and move to a new Seed phrase, or maybe just store your BTC under your pillow? (Just kidding!) 😂 Don’t be fooled!
Not financial advice.

Please continue

#BTC #Coldcard #HackerAlert
$BTC

🚨 CZ Calls for Wallet Diversification After $70M Coldcard Exploit 🚨

Binance founder Changpeng Zhao (CZ) is urging crypto users to spread their funds across multiple wallets following a major $70 million security failure impacting Coldcard hardware devices.

CZ emphasized that even hardware wallets are not immune to bugs and vulnerabilities. To mitigate risks, he suggests a diversification strategy rather than relying on a single security solution.

Key Takeaways:
🔒 Hardware wallets can still have software flaws.
💸 Spreading funds reduces single-point-of-failure risks.
🛡️ Diversification is vital for long-term asset security.

So what is actually happened and what we need to do with it?

Do not worry, if you are not using Coldcard wallet, you are worry free.

The reported COLDCARD vulnerability stems from a critical firmware bug that disabled the hardware random number generator. This flaw allows attackers to replicate recovery seeds generated on affected devices and steal funds.

Crucially, a simple firmware update will not secure vulnerable accounts. Affected users must immediately generate an entirely new recovery seed on patched firmware and transfer their BTC to the new address.

🚨 Critical Security Steps Required
1) Update firmware to the latest patched version immediately.
2) Generate a new seed phrase directly on the secure firmware.
3) Transfer all BTC from the compromised setup to the new wallet.
4) Never reuse the old, vulnerable recovery seed phrase.

$BTC $ETH $SOL

#CryptoSecurity #Coldcard #Web3

Over 1,000 BTC were stolen. This time, it wasn’t Bitcoin that was compromised—it was the “random number.”
This Coldcard vulnerability is more noteworthy than hacks against ordinary exchanges.
Because this time, it wasn’t that users clicked a phishing link, and it wasn’t that private keys were uploaded to the cloud.
The problem is at the very beginning:
When the wallet generates your seed phrase, the randomness isn’t random enough.
The affected portion—Mk3 seed effective entropy—is only about 40 bits. People originally thought they were holding a key that was almost impossible to guess, but the attacker’s search space shrank by several orders of magnitude.
What’s even more troublesome is that older versions of Mk4, Mk5, and Q are also affected, though the attack is harder.
The real slap in the face is an old saying in the coin world:
“Not your keys, not your coins.”
And now it seems we have to add another line:
Even your keys—make sure you know exactly how they were generated.
In the short term, it’s only a mild negative for $BTC , 3/10.
1,000 BTC isn’t enough to change BTC supply and demand.
But for the hardware wallet industry, it’s clearly a negative—8/10.
In the future, when large holders buy cold wallets, they won’t just ask “Is it connected to the internet?” and “Does it have a secure chip?” They’ll also ask:
Where does the randomness come from? Is the entropy enough? Whose code has been audited?
Meanwhile, I think solutions like multisig, independent entropy, and combining components from different vendors will receive more attention as a result.
There’s also an interesting detail: developers have already used cutting-edge AI models to rapidly reproduce the attack.
In the future, the biggest change in the security industry may be that—
both the speed of discovering vulnerabilities and the speed of exploiting them are accelerated by AI together.
If the seed of your cold wallet is inherently problematic, upgrading the device won’t magically make the old seed suddenly become secure.
This is probably the part that many people are most likely to misunderstand.
$BTC #Coldcard #硬件钱包 #coldcard漏洞被盗594枚btc

🚨 LATEST UPDATE 🚨

The scope of the Coldcard wallet security incident has expanded significantly. New analysis from Galaxy Research indicates that approximately 1,082.65 Bitcoin—valued at roughly $70.2 million—was moved through 1,196 different addresses during a brief 41-minute window on July 30.

This scale of loss is much higher than earlier estimates of $38 million. The attack followed a specific pattern of identical transaction fees and no change outputs. Coinkite co-founder Rodolfo Novak has acknowledged a firmware bug and released a hotfix, but warned that users with seeds generated on the vulnerable firmware should move their funds to a new seed immediately to ensure safety. 🛡️

This development highlights the critical importance of hardware wallet security and firmware integrity for self-custody. 🔐

How do you manage your seed security? 🧐

#Coldcard #Bitcoin #CryptoSecurity $BTC

$SOL $GIGGLE

Coldcard firmware flaw losses climb past $70M as 1,082 BTC drained from 1,196 wallets. CZ urges fund splitting; Coinkite issues fixes but old seeds remain at risk. Self-custody shaken hard today. $BTC $ETH $SOL #Crypto #Bitcoin #Coldcard #Security #Hack