Anonymous hackers affiliated with the #OpAfrica campaign have claimed responsibility for an attack on the website of Liquid Telecom.
They leaked usernames, email addresses, and hashed passwords online.
Liquid Telecom recently announced its plans to buy Neotel.
When Anonymous first announced #OpAfrica, it said it was about “a disassembly of corporations and governments that enable and perpetuate corruption on the African continent”.
It will also focus on the issues of child labour and Internet censorship in Africa.
Although Anonymous only recently claimed responsibility for the attack, Liquid said it happened earlier in 2016.
“There was a minor incident in January 2016, which affected some Liquid Telecom-related websites,” the company said.
“These hold publicly-available information. The cause of the breach was identified and immediately rectified. All the systems were checked and hosting and security arrangements reviewed.”
“As a result of these reviews, the hosting platform was changed and more stringent controls implemented.”
Liquid said its security practices include regular patching, vulnerability scanning, and penetration testing – all of which indicated there were no subsequent breaches.