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Two Canadians lose $2.3 million in AI deepfake crypto investment scam

Two Canadians from Ontario and Prince Edward Island lost a combined $2.3 million to an AI-enabled deepfake cryptocurrency investment scheme. The Ontario victim lost $1.7 million after being deceived by a fake Elon Musk video, while the other victim lost $600,000 after watching a clip falsely linked to Dragon's Den. The report was updated on December 21, 2025.

SantaStealer pushes wallet-stealing MaaS; $175–$300 plans, December 21, 2025

On December 21, 2025, SantaStealer was detailed as a malware-as-a-service that prioritizes crypto wallets. It is promoted on Telegram and hacker forums with monthly plans at $175 (Basic) and $300 (Premium). Rapid7 links it to BluelineStealer and notes weak evasion, while data is exfiltrated in 10MB chunks over port 6767.

Stablecoin market cap reaches $310.117B record on December 13

On Saturday, December 13, the stablecoin market set a new capitalization high at $310.117 billion. At the time of writing it is near $309.911 billion, with USDT at $186.242 billion and USDC at $78.315 billion, together holding around 85 percent of the sector.

Bitcoin Mining Stocks Fall 1.8% as Production Costs Reach $74,600 Per BTC

Bitcoin mining equities declined 1.8% in the week ending December 5, 2025, with market capitalization falling to $67.89 billion from $69.12 billion. Trading volume dropped 25.66% to $307.35k. Average cash costs for public miners to produce one Bitcoin reached $74,600, while all-in costs including depreciation and stock-based compensation climbed to $137,800, according to CryptoRank data.

Bitcoin Mining Stocks Rally as Sector Market Cap Reaches $69.1 Billion

Public bitcoin mining companies posted gains last week, with all top ten firms recording positive returns. The sector's total market capitalization reached $69.1 billion, rising 5.04% in 24 hours as Bitcoin traded above $90,000.

Ledger Introduces Multisig Feature with $10 Fee, Sparking Developer Criticism

Ledger launched an integrated multisig feature on October 24, 2025, charging a $10 flat fee per transaction plus 0.05% on token transfers. Developers and security researchers criticized the closed-source implementation and fee structure, arguing it contradicts the company's original ethos.

Zelle Operator Plans Cross-Border Stablecoin Payment Service

Early Warning Services (EWS), which operates the Zelle peer-to-peer payment network, announced plans to enable cross-border money transfers using stablecoins. The initiative aims to extend Zelle's domestic payment capabilities to international transactions. Zelle processed over $1 trillion in peer-to-peer payments in 2024, with August 2025 volumes reaching approximately $108 billion.