Detecting realtime phishing from a phished client or at a security server
Disclosed herein are techniques for detecting phishing websites. In one embodiment, a method is disclosed comprising receiving, at a server, a request for a webpage from a client device; generating, by the server, and inserting an encoded tracking value (ETV) into the webpage; inserting, by the server, dynamic tracking code (DTC) into the webpage, the inserting of the DTC further comprising obfuscating the DTC; and returning, by the server, the webpage including the ETV and DTC to the client device, the DTC configured to execute upon receipt at the client device and validate the ETV upon executing.
1. A method comprising:
receiving, at a server, a request for a webpage from a client device;
generating, by the server, and inserting an encoded tracking value (ETV) into the webpage, the ETV comprising a unique value generated based on the request;
inserting, by the server, dynamic tracking code (DTC) into the webpage, the inserting of the DTC further comprising obfuscating the DTC by modifying a first form of the DTC to a second form; and
returning, by the server, the webpage including the ETV and DTC to the client device, the DTC configured to execute upon receipt at the client device and validate the ETV upon executing by comparing one or more values in the ETV with a known corresponding current value, the comparing comprising:
computing a first comparison, the first comparison comprising a difference between a current timestamp and a timestamp included in the ETV,
computing a second comparison, the second comparison indicating whether an IP address in the ETV is equal to an Internet Protocol address of the server, and
computing a third comparison, the third comparison comprising a text distance between a domain name in the ETV and a domain name of the server.
2. The method of claim 1 , the validating by the DTC further comprising indicating a failed validation when the first comparison is greater than a preconfigured threshold and the third comparison is greater than a second preconfigured distance.
3. The method of claim 1 , the validating by the DTC further comprising indicating a failed validation if the first, second, and third comparison results are all greater than zero.
4. The method of claim 1 , further comprising receiving, by the server, a notification if the validating fails.
5. A non-transitory computer readable storage medium for tangibly storing computer program instructions capable of being executed by a computer processor, the computer program instructions defining the steps of:
receiving a request for a webpage from a client device;
generating and inserting an encoded tracking value (ETV) into the webpage, the ETV comprising a unique value generated based on the request;
inserting dynamic tracking code (DTC) into the webpage, the inserting of the DTC further comprising obfuscating the DTC by modifying a first form of the DTC to a second form; and
returning the webpage including the ETV and DTC to the client device, the DTC configured to execute upon receipt at the client device and validate the ETV upon executing by comparing one or more values in the ETV with a known corresponding current value, the comparing comprising:
computing a first comparison, the first comparison comprising a difference between a current timestamp and a timestamp included in the ETV,
computing a second comparison, the second comparison indicating whether an IP address in the ETV is equal to an Internet Protocol address of a server, and
computing a third comparison, the third comparison comprising a text distance between a domain name in the ETV and a domain name of the server.
6. The non-transitory computer readable storage medium of claim 5 , the validating by the DTC further comprising indicating a failed validation when the first comparison is greater than a preconfigured threshold and the third comparison is greater than a second preconfigured distance.
7. The non-transitory computer readable storage medium of claim 5 , the validating by the DTC further comprising indicating a failed validation if the first, second, and third comparison results are all greater than zero.
8. The non-transitory computer readable storage medium of claim 5 , the instructions further defining the step of receiving a notification if the validating fails.
9. An apparatus comprising:
a processor; and
a storage medium for tangibly storing thereon program logic for execution by the processor, the stored program logic causing the processor to perform the operations of:
receiving a request for a webpage from a client device;
generating and inserting an encoded tracking value (ETV) into the webpage, the ETV comprising a unique value generated based on the request;
inserting dynamic tracking code (DTC) into the webpage, the inserting of the DTC further comprising obfuscating the DTC by modifying a first form of the DTC to a second form; and
returning the webpage including the ETV and DTC to the client device, the DTC configured to execute upon receipt at the client device and validate the ETV upon executing by comparing one or more values in the ETV with a known corresponding current value, the comparing comprising:
computing a first comparison, the first comparison comprising a difference between a current timestamp and a timestamp included in the ETV,
computing a second comparison, the second comparison indicating whether an IP address in the ETV is equal to an Internet Protocol address of the apparatus, and
computing a third comparison, the third comparison comprising a text distance between a domain name in the ETV and a domain name of the server.
10. The apparatus of claim 9 , the validating by the DTC further comprising indicating a failed validation when the first comparison is greater than a preconfigured threshold and the third comparison is greater than a second preconfigured distance.
11. The apparatus of claim 9 , the validating by the DTC further comprising indicating a failed validation if the first, second, and third comparison results are all greater than zero.
12. The apparatus of claim 9 , the stored program logic further causing the processor to perform the operation of receiving a notification if the validating fails.