sensitive information portal

regex in the sensitive information portal within m365 compliance center are case sensitive!

when using a word match, the portal defaults to the following pattern:

(?:^|[\s,;\:\(\)\[\]"'])(put your word here)(?:$|[\s,\;\:\(\)\[\]"']|\.\s|\.$)

The start of the string must be

at the beginning of a line OR
separated from other strings in the same line with \s or one of the following: ``,:;()[].`

the end of the string must be

at the and end of line OR
it must be separated from other strings in the same line with \s or one of the following: ``,:;()[].`

Matches are case-sensitive! Use (?i) for case-insensitive matches!

(?i)(?:^|[\s,;\:\(\)\[\]"'])(\d{4}-\d{2}-\d{2}\stest\string)(?:$|[\s,\;\:\(\)\[\]"']|\.\s|\.$)

test pattern with powershell

powershell matches are case-insensitive by default. Use (?-i) to remove the i modifier and make matches case-sensitive.

$pattern = @'
(?-i)(?:^|[\s,;\:\(\)\[\]"'])(\d{4}-\d{2}-\d{2}\stest\sstring)(?:$|[\s,\;\:\(\)\[\]"']|\.\s|\.$)
'@
$testStrings = @(
    '2021-06-15 test string',
    '123:2021-06-15 Test String:sdf',
    'bla bla 2022-06-15 test String asdsad'
    '2021-06-15 test string afdsfsd',
    '\12021-06-15 test string@3'
)
$testStrings -match $pattern