Your computer or web browser has dramatically slowed down over a period of a few days/a week
Frequent freezing or crashing
Modified or deleted files
New programs or desktop icons that you do not recall installing/creating
Programs running without your consent
Programs closing without your consent
Changes in your security settings
Unusual emails/social media messages being sent without your permission to a large audience
Pop-up advertisements: Most browsers suppress these by default so if you are getting them, something has changed those settings (or you have otherwise explicitly allowed pop-ups)
Your default search engine has been changed without you altering it
Answers & Comments
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