In the search for a better user experience, the main browsers on the market such as Chrome, Firefox or Safari allow the use of the 'autocomplete' function to fill in the requested data (username and/or password) by simply entering the first few characters. But, that comfort comes at a price that translates into greater vulnerability.
The risk we incur by 'auto-completing' a form in our browser is that the software does not know how to discriminate. We can find forms with hidden fields that the browser fills in automatically and we are giving data involuntarily. It may also be that the page has hidden scripts so that the autocomplete function reveals the information just by visiting the page. Or, it is possible that we leave the computer unlocked: if we have the autocomplete function activated, anyone can access our pages and passwords.
What to do if your passwords or sensitive data have been stolen
Despite all the preventive measures we can take, hackers may occasionally manage to get past the defenses. If you have the slightest suspicion that this has happened, modify your passwords for the platform in question and report this vulnerability if it could lead to serious violations such as identity theft or data extraction.
If the suspicions are confirmed, report what happened to the authorities and record each step followed until falling into the phishing attack. Also, change the passwords of the affected service, communicate it to the bank if it is data that affects your accounts with the entity, block credit cards.
If you have been the victim of a scam, contact the company that has been impersonated in the attack so that they are aware and take action.