Share this article
Stablecoin SafeDollar Hit by Cyberattack
The stablecoin's value drops to zero.
Updated Sep 14, 2021, 1:17 p.m. Published Jun 28, 2021, 8:37 a.m.
SafeDollar, a decentralized finance (DeFi) stablecoin that is based on the Polygon blockchain, has been hit by an cyberattack, according a statement on its Telegram channel.
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters
- All activities on SafeDollar have been paused and investigations are underway, it said.
- "IMPORTANT: PLEASE STOP ALL TRADING RELATED TO $SDO," it added.
- The value of SafeDollar has dropped to $0, according to the protocol's website.
- The cyberattack used tether and USD coin, beincrypto.com reported, citing a tweet by DeFi analytics site Rugdoc.io Monday.
- The contract address shows SafeDollar, USDC and USDT were siphoned off.
Read more: DeFi Protocol EasyFi Reports Hack, Loss of Over $80M in Funds
More For You
Protocol Research: GoPlus Security

What to know:
- As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
- GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
- Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.
More For You
Altcoins plunge as bitcoin's $85,000 test triggers $550 million in liquidations

Solana tumbled below $120 to its weakest price since April, while SUI, DOGE and ADA also fell sharply.
What to know:
- Bitcoin is teetering on the brink of falling below $85,000 level, accelerating declines in the crypto market.
- Altcoins such as SOL, Cardano, ADA, SUI and dogecoin led Thursday's drop.
- $550M in liquidations hit derivatives markets, but analysts said the pullback looks like orderly deleveraging rather than full-blown panic.
Top Stories












