Share this article

Crypto Lending Platform BlockFi Attacked With Flood of Fake, Abusive Sign-Ups

The malicious spree involved offensive language being placed in the first and last name fields on the account registration page.

Updated May 9, 2023, 3:16 a.m. Published Mar 10, 2021, 9:28 a.m.
BlockFi CEO Zac Prince
BlockFi CEO Zac Prince

Crypto lending platform BlockFi endured an unusual assault on Sunday afternoon as an attacker spammed the platform with fake sign-ups and abusive language.

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

According to a report by Forbes on Tuesday, BlockFi's employees were able to identify the incident shortly into the attack that involved "vulgar and racist" language being placed in the first and last name fields on the account registration page.

The accounts were registered using over 1,000 email addresses, half of which were identified as valid and belonging to real users, according to the reporting.

“I think this spam attack [was] designed to try and create negative sentiment around BlockFi by trying to get emails sent with vulgar language in them," BlockFi CEO and co-founder Zac Prince told Forbes. Possibly 500 emails did get sent before the attack was spotted, he added.

See also: Crypto Lender BlockFi Registers Bitcoin Trust With SEC

It isn't the first time BlockFi has suffered a security scare. In May of last year, an attacker got hold of users’ data by compromising an employee’s through a SIM swap attack. No funds were lost in the incident.

"Hackers have never been successful in penetrating internal company’s systems," said Prince, who compared Sunday's incident to what happened in May as "just shooting lasers at the onion."

CoinDesk attempted to contact BlockFi, but did not receive a response by press time.

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

Turkey's Paribu Buys CoinMENA in $240M Deal, Expanding Into High-Growth Crypto Markets

Yasin Oral, Founder and CEO of Paribu (center) and Dina Sam’an (left) and Talal Tabbaa (right), Co-Founders of CoinMENA (Paribu, modified by CoinDesk)

With the acquisition, Paribu gains regulatory foothold in Bahrain and Dubai and access to the region's fast-growing crypto user base.

What to know:

  • Paribu acquires Bahrain- and Dubai-based CoinMENA for up to $240 million.
  • Deal marks Turkey’s biggest fintech acquisition and first international crypto M&A, the firm said.
  • The move taps into the MENA region’s fast-growing crypto user base and supportive regulatory hubs.