Это определенно работает:
regex_list=(
# block any private key file
'(\-){5}BEGIN\s?(RSA|OPENSSH|DSA|EC|PGP)?\s?PRIVATE KEY\s?(BLOCK)?(\-){5}.*'
# block AWS API Keys
'AKIA[0-9A-Z]{16}'
# block AWS Secret Access Key (TODO: adjust to not find validd Git SHA1s; false positives)
# '([^A-Za-z0-9/+=])?([A-Za-z0-9/+=]{40})([^A-Za-z0-9/+=])?'
# block confidential content
'CONFIDENTIAL'
# block kube config file
'apiVersion: v1\sclusters:\s- cluster:\s'
)