Are you a fan of NFTs?  If so, you’ve probably heard of OpenSea, which is the largest marketplace for non-fungible tokens.

If you have an account there, be aware that recently the company disclosed that their network had been breached and they issued a warning to their clients urging them to be on the lookout for possible phishing emails.

Cory Hardman is OpenSea’s head of security. According to Hardman, an employee of Customer.io, which is the company’s email delivery vendor, downloaded a file containing email addresses that belong to OpenSea users and newsletter subscribers. The precise number of email addresses the attacker made off with was not disclosed.

Mr. Hardman said:

“If you have shared your email with OpenSea in the past, you should assume you were impacted. We are working with Customer.io in their ongoing investigation, and we have reported this incident to law enforcement.”

This is not the first time OpenSea users have been targeted.  Last year, threat actors impersonating fake support staff successfully absconded with roughly two million dollars (USD) worth of NFTs. Last September (2021) the company addressed a security flaw that allowed attackers to empty an OpenSea user’s cryptocurrency wallets by luring them to click on maliciously crafted NFT artwork.

Although the industry is still in its formative stages, it has grown at a blistering pace. OpenSea is the largest marketplace in the NFT industry. They boast more than 600,000 users and total transactions that surpass $20 billion (USD) which make it a prime target for hackers.

Sadly, this will almost certainly not be the last time OpenSea and other NFT markets find themselves in the crosshairs.

If you have an account there, be on high alert.  Odds are good that the attacker will try to put your email address to malicious use.

Related Posts - TKS Blog
Phishing: 6 Real Subject Lines Your Team Will See in 2026
  Start 2026 smarter, with security habits your whole team can actually use. You know the drill: it’s 8:03 a.m., you’ve barely had your first sip of...
Read more
HIPAA Compliance and Cybersecurity in 2026
Imagine this: A single stolen laptop containing patient records could cost your organization millions in fines, lawsuits, and lost trust. Now imagine that same incident...
Read more
Cybersecurity in 2026: Resolutions Every Business Owner Should Make
A New Year Offers the Perfect Moment to Refresh Your Security Strategy The calendar has flipped to 2026, and while personal resolutions are top of mind,...
Read more
Cybersecurity Compliance Checklist for 2026: CPAs & Financial Firms
A Practical Guide for Louisiana Accounting Firms, Banks, and Credit Unions Compliance Is No Longer Optional Cybercrime isn’t slowing down, and neither are regulators. For CPAs, accounting...
Read more

Used with permission from Article Aggregator