Share this article

Crypto Firms Hit by Newsletter Breach Attack, Mailing Lists Leaked

Crypto users are being warned to be careful with email newsletters in the coming days.

Updated Jun 5, 2024, 11:33 a.m. Published Jun 5, 2024, 11:25 a.m.
Crypto companies hit by newsletter breach (Mika Baumeister/Unsplash)
Crypto companies hit by newsletter breach (Mika Baumeister/Unsplash)
  • The attack targeted newsletter vendors and was reported by several crypto companies.
  • Users were warned to be vigilant against malicious phishing links.
  • It is currently unclear how much, if anything, has been stolen.

Several cryptocurrency businesses are reporting that there is an ongoing “supply chain email breach attack” that uses newsletter mailing lists to send malicious phishing links to users.

The breach targeted an unnamed vendor that manages mailing lists for crypto companies. Bitfinex CTO Paolo Ardoino and CoinGecko founder Bobby Ong have confirmed that a breach has taken place.

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

“There is an ongoing supply chain email breach attack happening with an email newsletter vendor right now,” Ong said. “Several crypto companies may be affected via email blasts of fake token launches. Be careful with email newsletters in the coming days.”

"We have received two independent confirmations that a prominent vendor used by crypto companies to manage mailing lists might have been compromised. "Please beware of any emails suggesting crypto-airdrops received more than 24 hours ago," Ardoino. added.

Phishing is a technique used by hackers to lure a victim into clicking on a malicious link. That link will either drain that user’s personal information, like login data, or it can link directly to an online crypto wallet, giving the attacker access to the user’s wallet.

The amount, if any, that has been stolen from phishing links in connection with this breach is currently unclear.

More For You

Protocol Research: GoPlus Security

GP Basic Image

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

Coinbase rolls out stock trading, prediction markets and more in bid to become the ‘Everything Exchange’

Coinbase CEO Brian Armstrong (Coinbase)

Coinbase is dramatically expanding the assets available to trade on its platform, including novel cryptocurrencies, perpetual futures, stocks and prediction markets, starting with Kalshi.

What to know:

  • Coinbase is expanding offerings on its platform, introducing hundreds of top stocks based on market cap, trading volume, etc, with plans to add thousands of additional stocks and ETFs over the coming months.
  • Coinbase users will also be able to trade on the outcomes of real-world events like elections, sports, collectibles, and economic indicators, starting with Kalshi and more to be integrated over time.
  • A new AI-driven wealth management advisory service has been introduced, as well as Coinbase Business to help startups and small businesses incorporate crypto.