# Bitcoin security concerns regarding quantum computing

> Live situation record from CLSTR: https://clstr.news/situations/bitcoin-security-concerns-regarding-quantum-computing
> Updated: 2026-08-21T03:44:41.000Z. Sources: 6. Developments: 3.

CNBC host Jim Cramer announced plans to sell his Bitcoin holdings due to concerns that advancements in quantum computing could compromise the cryptocurrency’s cryptographic security. This decision followed an interview with IBM CEO Arvind Krishna, who suggested investors should become ‘paranoid’ about crypto security within the next three to four years.

While Bitcoin prices saw minor increases during the initial announcement, the debate continues regarding the timeline of the ‘quantum threat.’ Some experts, including researchers at Alphabet, suggest existing Bitcoin could be vulnerable if technological progress continues at its current pace. Conversely, other analysts argue the threat is overblown or decades away, noting that the blockchain developer community may have sufficient time to implement post-quantum cryptography to protect the network.

Following his initial recommendation to exit the market, Cramer recently advised a caller to buy the asset directly rather than using crypto-linked derivatives. Since his original sell recommendation, the price of Bitcoin has surged significantly, climbing over $10,000 toward the $75,000 mark. This price movement has reinforced the ‘Inverse Cramer’ theory among some traders, a sentiment suggesting that betting against Cramer’s market calls can be a profitable contrarian strategy, though analysts warn such theories are based on individual opinions rather than fundamental data.

## Timeline

### 2026-08-21: Bitcoin price surges following Jim Cramer's previous sell recommendation

Jim Cramer’s recent advice to buy Bitcoin, following his previous recommendation to sell due to quantum computing fears, has fueled the “Inverse Cramer” trading theory as prices surged.

4 sources. https://clstr.news/cluster/bitcoin-price-surges-following-jim-cramers-previous-sell-recommendation

### 2026-08-15: Jim Cramer sells Bitcoin amid concerns over quantum computing threat

Jim Cramer is selling his Bitcoin due to concerns that future quantum computers could crack the cryptocurrency's encryption, despite experts noting that such technology is not yet a practical threat.

2 sources. https://clstr.news/cluster/jim-cramer-sells-bitcoin-amid-concerns-over-quantum-computing-threat

### 2026-08-04: Jim Cramer to sell Bitcoin over quantum computing fears as price climbs

Jim Cramer will sell his Bitcoin over quantum‑computing fears after IBM’s Arvind Krishna warned of crypto security risks; Bitcoin still rose about 1.6% to $63,500‑$63,700.

6 sources. https://clstr.news/cluster/jim-cramer-to-sell-bitcoin-over-quantum-computing-fears-as-price-climbs

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Cite as: Bitcoin security concerns regarding quantum computing. CLSTR, https://clstr.news/situations/bitcoin-security-concerns-regarding-quantum-computing