For the second time in less than a year, email newsletter service Mailchimp found itself in an embarrassing position. Admitting a Data Breach.

According to Mailchimp, a social engineering attack successfully tricked Mailchimp employees and contractors into giving up their login credentials. These details were used by the hackers to access his 133’s Mailchimp account.

Mailchimp said it contacted all affected account holders on January 12, less than 24 hours after the security breach was discovered.

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One of Mailchimp’s customers that appeared to be affected was WooCommerce, the maker of a popular WordPress plugin for companies that run online stores.

Woocommerce email
Woocommerce warns subscribers that Mailchimp has been compromised

WooCommerce has reached out to affected users to warn them that some of their personal information has been exposed.

  • their name
  • Online store URL
  • their address
  • e-mail address

Such information can obviously be misused by attackers, such as in phishing attacks.No doubt WooCommerce and other Mailchimp users are using their Own Mailchimp security mistake puts customers at risk.

Mailchimp is no stranger to security breaches.

March 2022, Mailchimp discovered It was discovered that the attackers had access to tools used by customer support teams and were able to gain access to 300 client accounts and steal subscriber data from 102 of them.

Mailchimp customers who worked in the cryptocurrency and financial sectors found their accounts targeted on the occasion and sent unsuspecting newsletter subscribers compelling (but malicious) emails. Scammers have opened the opportunity to send

Then, similar to recent breaches, the attackers used social engineering to trick Mailchimp workers into handing over their login credentials.

Mailchimp seems to have acted relatively quickly in this case, but I’m not sure if they’ve taken enough steps to lock down access to their internal tools and ensure that only truly authorized people have access. There will undoubtedly be questions about.

Did you find this article interesting? Follow Graham Cluley on Twitter Also Mastodon To read more about the exclusive content we post.


Graham Cluley is a veteran of the antivirus industry and has worked for many security companies since the early 1990s when he created the first version of Dr. Solomon’s Antivirus Toolkit for Windows. He is now an independent security he is an analyst, makes regular media appearances and gives international lectures on computer he security, hackers and online he privacy. Follow him on Twitter. @gcluleyfor Mastodon @[email protected]or drop him an email.

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