Enlarge (credit: Timon Schneider/Dreamstime) Google’s parent company, Alphabet, is in talks to buy cybersecurity start-up Wiz for about $23 billion, in what would be the largest acquisition in the tech group’s history, according to people familiar with the matter. Alphabet’s discussions to acquire Wiz are still weeks away from completion, said one person with direct knowledge of the matter, while people briefed about the transaction said there was still a…