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Bitcoin

Can quantum computers break Bitcoin? What the math says

A powerful enough quantum computer could forge Bitcoin signatures in theory. No such machine exists, and the distance between today's 105-qubit chips and the millions an attack would need is still vast. Here is what is real, what is years away, and what Bitcoin is already doing about it.

6 min read
Bitcoin

Keystone says website breach exposed customer names and addresses

A breach of Keystone's website exposed customer names, shipping addresses and order details, the hardware wallet maker said. It confirmed the theft on October 23 and said recovery phrases and private keys were safe, but the leaked contact data still opens the door to phishing and worse.

4 min read
Business

CoinDCX admits $16 million loss from retired wallets after denial

The Indian exchange confirmed on October 25 that it lost 15.99 million USDT to an attack on a wallet system it retired after a 2025 hack. CoinDCX says it covered the loss. For three days before, its CEO and on-chain investigators argued over whether anything had been taken at all.

4 min read
Regulation & policy

UK's FCA consults on DeFi rules ahead of 2027 crypto regime

Britain's financial regulator opened two DeFi consultations on October 21, 2026, closing November 18, as it prepares to pull crypto inside its rules from October 2027. Coinbase warns the approach could box DeFi into a silo.

4 min read
Learn

How to invest in stablecoins: where the yield comes from and the risk

A dollar stablecoin never grows in value, so investing in one means earning a yield on the side. Here is where that yield comes from, across exchanges, DeFi and tokenized Treasuries, what it really pays, and the peg and platform risks the advertised rate leaves out.

7 min read
Regulation & policy

Bybit wins full VARA license to run a Dubai spot exchange

Dubai's Virtual Assets Regulatory Authority has added Bybit to its public register with a full spot exchange license. Trading is not live yet, and the approval does not cover derivatives.

4 min read
Markets

Why does crypto go down? The recurring reasons prices fall

Crypto sell-offs look chaotic, but most trace back to the same handful of causes. Leverage that unwinds fast, a shift in interest-rate bets, money leaving spot ETFs, and the mood across riskier assets. Here is how each one pushes prices lower, with real examples.

8 min read

More top stories

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  1. DeFi & protocols

    Initia halts its blockchain after a mint bug bridges out $2.7 million

    4 min read
  2. Business

    Objections to OKX-ICE tokenized stocks reach 22 US companies

    4 min read
  3. Learn

    How long does it take to mine 1 bitcoin? The honest math

    6 min read
  4. Bitcoin

    Electrum patches Bitcoin wallet flaw after server attacks

    4 min read

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  1. Learn

    How to invest in stablecoins: where the yield comes from and the risk

    7 min read
  2. Learn

    How long does it take to mine 1 bitcoin? The honest math

    6 min read
  3. Learn

    How to buy bitcoin in the UAE and Dubai: the steps and rules

    8 min read
  4. Learn

    Bitcoin ETF vs owning bitcoin: fees, custody and control

    7 min read

Bitcoin

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Can quantum computers break Bitcoin? What the math says

A powerful enough quantum computer could forge Bitcoin signatures in theory. No such machine exists, and the distance between today's 105-qubit chips and the millions an attack would need is still vast. Here is what is real, what is years away, and what Bitcoin is already doing about it.

6 min read

Keystone says website breach exposed customer names and addresses

A breach of Keystone's website exposed customer names, shipping addresses and order details, the hardware wallet maker said. It confirmed the theft on October 23 and said recovery phrases and private keys were safe, but the leaked contact data still opens the door to phishing and worse.

4 min read

Electrum patches Bitcoin wallet flaw after server attacks

Electrum shipped version 4.8.3 to close a high-severity flaw that let a hostile server redirect a payment when a user raised its fee. The project says some servers were already running the attack and has urged every user to upgrade.

4 min read

Business

View all

CoinDCX admits $16 million loss from retired wallets after denial

The Indian exchange confirmed on October 25 that it lost 15.99 million USDT to an attack on a wallet system it retired after a 2025 hack. CoinDCX says it covered the loss. For three days before, its CEO and on-chain investigators argued over whether anything had been taken at all.

4 min read

Objections to OKX-ICE tokenized stocks reach 22 US companies

The objector count has more than doubled since BTC Newz reported the first opt-outs a week ago. Microsoft, Alphabet, Goldman Sachs and Wells Fargo are now among 22 US-listed firms blocking tokenized versions of their shares on the OKX and ICE venue. Trading has not started.

4 min read

a16z renames its crypto fund a16z Frontier and widens its bets

Andreessen Horowitz dropped the word crypto from its flagship blockchain fund on October 22, renaming it a16z Frontier and widening its mandate to AI and robotics. The firm says it will keep backing crypto startups, five months after calling its latest fund fully dedicated to them.

4 min read

DeFi & protocols

View all

Initia halts its blockchain after a mint bug bridges out $2.7 million

A minting bug on the Initia blockchain let an attacker create unbacked tokens and move about $2.7 million to Ethereum before the network was stopped. A day later the chain and its rollups stayed offline, with no restart date and no final loss figure.

4 min read

Ethereum draft aims to cut transaction finality to four minutes

Five Ethereum researchers filed a draft consensus design on October 21 that aims to cut the time a transaction takes to become final, from about 16 minutes to roughly four. The proposal, EIP-8453, is only seeking a number to enter the formal upgrade process.

4 min read

Markets

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Why does crypto go down? The recurring reasons prices fall

Crypto sell-offs look chaotic, but most trace back to the same handful of causes. Leverage that unwinds fast, a shift in interest-rate bets, money leaving spot ETFs, and the mood across riskier assets. Here is how each one pushes prices lower, with real examples.

8 min read

Crypto liquidations explained: why one sell-off triggers more

A crypto liquidation force-closes a leveraged bet when the trader's margin runs out. When enough of them hit at the same price, the selling feeds on itself. In October 2025 that loop erased more than $19 billion of positions in a single day.

7 min read