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The Core Reasons U Cards Get Shut Down
When a U Card suddenly stops working, the real cause may lie in weaknesses across the issuing chain: BIN-level risk, contaminated pooled funds, multi-layer intermediaries, and more. Users should top up only as needed, diversify their payment options, and avoid treating a U Card like a savings account.
When Should You Stop Using a Crypto Payment Card? Six High-Risk Events to Watch
If a crypto payment card begins showing repeated declines, unexplained charges, refund failures, account reviews, partner changes, or sudden rule changes, users should stop using it and move available funds. This article examines six high-risk events and the actions users should take.
Coldcard Wallet Entropy Flaw and Nearly $90 Million in Losses: A Stark Warning from “Absolutely Secure” Hardware
A low-entropy flaw in Coldcard wallet firmware may have enabled the sweeping of roughly 1,367 BTC, worth close to $90 million. Coinkite has released fixed firmware, and affected users need to generate new seeds and move their funds.
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The Core Reasons U Cards Get Shut Down
When a U Card suddenly stops working, the real cause may lie in weaknesses across the issuing chain: BIN-level risk, contaminated pooled funds, multi-layer intermediaries, and more. Users should top up only as needed, diversify their payment options, and avoid treating a U Card like a savings account.
When Should You Stop Using a Crypto Payment Card? Six High-Risk Events to Watch
If a crypto payment card begins showing repeated declines, unexplained charges, refund failures, account reviews, partner changes, or sudden rule changes, users should stop using it and move available funds. This article examines six high-risk events and the actions users should take.
Coldcard Wallet Entropy Flaw and Nearly $90 Million in Losses: A Stark Warning from “Absolutely Secure” Hardware
A low-entropy flaw in Coldcard wallet firmware may have enabled the sweeping of roughly 1,367 BTC, worth close to $90 million. Coinkite has released fixed firmware, and affected users need to generate new seeds and move their funds.
BitMart Announces Shutdown: From the $196 Million 2021 Hack to the Exit Logic of a Mid-Sized Crypto Exchange
BitMart has announced an orderly wind-down of operations. From the $196 million hack in 2021 to the strategic retreat of a mid-sized exchange, this article examines the reasons behind the shutdown, the timeline, and the broader industry implications.
Why Is BitMEX Shutting Down? From Perpetual-Swap Pioneer to a Quiet Exit
BitMEX has announced that it will shut down in September 2026. Once a pioneer of perpetual swaps, it is exiting after years of regulatory penalties, declining market share, a failed sale process, and intensifying competition.
X-Money: The Most Comprehensive Guide Online
X Money is the digital wallet and payment service built into the X platform. It offers up to 6% APY, a metal Visa card, as much as $10 million in FDIC insurance coverage, and features including transfers, spending, and bill payments. It is currently being rolled out to selected users in the United States.