In mid-2018, the social ebook subscription service Bookmate was among a raft of sites that were breached and their data then sold in early-2019. The data included almost 4 million unique email addresses alongside names, genders, dates of birth and passwords stored as salted SHA-512 hashes. The data was provided to HIBP by a source who requested it to be attributed to "BenjaminBlue@exploit.im".