Excel allows you to set a password to open the file ( File > Info > Protect Workbook > Encrypt with Password ). Even a weak password stops Google from parsing the contents.
You do not need to be a hacker to understand the automation. filetype xls username password email
A cryptocurrency exchange's employee created an internal audit spreadsheet with the title "API Keys & Withdrawal Passwords." They saved a copy to their personal Google Drive and accidentally set the share settings to "Public." Within 48 hours of the file being indexed, $1.2 million was drained from hot wallets. Excel allows you to set a password to
, a technique used by security researchers and hobbyists to find specific file types indexed by search engines that might contain sensitive information. Prefeitura de Aracaju Protect Workbook >
If you find anything, remove the file and request Google remove the cached result via the Google Remove Outdated Content tool .