Mysearch123 is such an annoying browser hijacker.
Computer users suddenly get hit by Mysearch123 for no reasons. Weirdly, their browser start-up pages are constantly turned into mysearch123.com. They tried to reverse it back to their original ones by clearing browser cookies and also tried to remove the infected browser and then reinstalled. However, this immortal Mysearch123 browser hijacker always manager to come back to repopulate itself again.