About istart123.com
"My browser's default homepage was modified to istart123.com, I tried to set Google.com again but the browser setting doesn't work."
"Search results on my browser looks strange. I can only see sponsored links and annoying advertisements."
"I found some unfamiliar sites are added to my bookmarks without my knowledge. I opened them and noticed they are some malicious sites."
If you have the similar problems, there is no doubt that your browser is hijacked by istart123.com. It can secretly change the default homepage and redirects your browsing.
This browser hijacker comes to your browser after you visited some malicious sites or installed freeware blindly. Search results will be replaced by sponsored links and other junk information instead of ideal information.