Bitcoin’s Sell-Off Triggers: Security, Funds, and Treasury Moves

Bitcoin is still under pressure, and the latest weakness can be tied to three clear forces: a wallet security problem, softer demand from spot exchange-traded funds, and fresh selling from Strategy, the company long viewed as one of the biggest corporate buyers. Taken together, these developments help explain why the market has struggled to stabilise.

Coldcard Risk Is Driving Unease

The most immediate concern is the Coldcard hardware wallet issue. Coinkite has warned that some seed phrases created on specific vulnerable firmware versions may expose funds, which means the problem affects a defined group of users rather than every Coldcard owner.

The incident has grown in size as attackers continued to drain affected wallets:

• Initial reports pointed to almost $40 million in BTC stolen from vulnerable addresses.
• Two further waves were reported after the first disclosure.
• Total losses later climbed to 1,367.05 BTC, or roughly $88.6 million.
• Alex Thorn of Galaxy Digital said a fourth wave appeared to match the pattern of vulnerable Coldcard UTXOs.
• Thorn also said affected holders should move funds quickly, with about 449 BTC still at risk in that wave.

The effect is not only financial. Santiment reported that Bitcoin’s positive-to-negative sentiment ratio across X, Reddit, and Telegram fell to its lowest level since tracking began, which suggests confidence among retail traders has weakened sharply.

ETF Flows Lost Their Early Momentum

Spot Bitcoin ETFs gave the market a brief lift in July, but that rebound has not held. June was the weakest month on record for the category, while July started with nearly $200 million in net inflows during the first week.

That strength faded soon after:

• Inflows slowed by the middle of the month.
• A stronger stretch followed, with seven straight days of net inflows from July 14 to July 22.
• After that run ended, outflows returned and erased part of the rebound.
• SoSoValue has not yet released August flow figures, so the newest trend remains unconfirmed.

This matters because spot ETFs are the main route for capital that prefers regulation and institutional custody. That includes pension funds, hedge funds, and other allocators that want simple exposure rather than direct self-custody. With the Coldcard situation still unfolding, the appeal of products from firms such as BlackRock, Fidelity, Bitwise, and Franklin Templeton may stay relevant for that buyer base.

Strategy Added Another Layer of Supply

Strategy also added to the market’s cautious tone. Michael Saylor, the company’s co-founder and Executive Chairman, said Strategy increased its USD Reserve by $250 million and completed an $81 million buyback of STRC shares.

Less prominently, the company also sold 1,637 BTC for about $105 million between July 27 and August 2. That lowered holdings from 843,775 BTC to 842,138 BTC. The cut is small in percentage terms, but it stands out because Strategy has usually been seen as a persistent buyer rather than a seller.

Why the Price Action Looks Weak

Bitcoin’s recent slide lines up with all three pressures appearing at once: security fear, weaker ETF demand, and corporate distribution. The result is a market that lacks a strong near-term catalyst.

• Spot price: about $63,600, according to CoinGecko
• Weekly move: roughly 1% lower

Seasonality does not help. August has been a weak month for Bitcoin, finishing lower in 9 of the past 13 years. That historical pattern, combined with current pressure from security headlines, fading ETF appetite, and Strategy’s sale, leaves the market vulnerable to more short-term volatility.