def guess_contains_nessus(lines):
    """Tries to determine if a file includes nessus
    """
    for line in lines:
        if (
            'you have deleted older versions nessus libraries from your system'
             in line):
            return 1
        if 'server_info_nessusd_version' in line:
            return 1
        if 'nessuslib_version' in line:
            return 1
        if 'nessus_lib_version' in line:
            return 1
    return 0
