Seen on Travel Mole:
Holiday Extras is investigating how the email addresses of nearly 5,000 of its customers were wrongly shared online.
It is contacting 4,852 customers to tell them about the security breach, which it blamed on a mistake by one of its marketing partners.
In a note to its customers, Holiday Extras assured them that their payment details and passwords were not exposed and said the issue has now been resolved.
CEO Matthew Pack said the links containing customer email addresses were showing between March 10 and April 16 on the Open Site Explorer service of MOZ, a marketing and SEO software company.
He said he believes the mistake was made when Bit.ly, which operates a URL shortening and redirection service, signed a partnership with MOZ on March 10.
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