Aug 11 (Reuters) - Accenture (ACN.N) said it has fully restored certain affected systems, after a CNBC reporter tweeted of a hacker group saying it attacked the IT consulting firm using LockBit ransomware and threatened to release the data in several hours. "Through our security controls and protocols, we identified irregular activity in one of our environments. We immediately contained the matter and isolated the affected servers," Accenture said in a statement on Wednesday. "We fully restored our affected systems from backup, and there was no impact on Accenture"s operations, or on our clients" systems." Accenture provides management and technology consulting services to clients including e-commerce giant Alibaba , Cisco (CSCO.O) and Alphabet Inc"s (GOOGL.O) Google, according to their 2020 annual report.