The term surveillance system is identified in base64 scheme by the sequence c3VydmVpbGxhbmNlIHN5c3RlbQ==, while the MD5 signature is equal to a1fc6ae512a397f9b2112e3725267009. The ASCII encoding of surveillance system in hexadecimal notation is 7375727665696c6c616e63652073797374656d.