Ids.xls

The .xls format became popular in the late 1990s and early 2000s for storing ID lists because:

If you are trying to , ensure you are using a library compatible with the legacy .xls format (like xlrd ) rather than the modern .xlsx format. To provide a more specific write-up, could you tell me: ids.xls

Most ids.xls files are stored without password protection. Excel’s native encryption for .xls files (before Office 2007) was notoriously weak—using only a 40-bit RC4 encryption that can be cracked in minutes with modern tools. If an attacker gains access to a file server, searching for *.xls containing "SSN" or "Credit_Card" is a standard first step. ids.xls