Polish University SGH reported some time ago that about 1,500 students were leaked due to a "programming error". These were people who went on student exchanges and applied for them. Student data was indexed and available on Bing for over a month. According to the university, after sending the appropriate message to Bing, the data was removed from the search results.

Data that could be displayed are:

• login
• number of album
• first name and middle name
• last name
• PESEL
• gender
• mother's name
• father's name
• mother's maiden name
• Date of birth
• Address for correspondence
• Phone number
• private email
• citizenship, nationality, possession of the Pole's Card
• series and number of ID or passport and date of issue
• mode, level and field of study
• account number
• language proficiency level
• average grade
• number of points.

Source: niebezpiecznik.pl