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1. (WO2017205121) DISTINGUISHING VERTICAL BRUTE FORCE ATTACKS FROM BENIGN ERRORS

Pub. No.:    WO/2017/205121    International Application No.:    PCT/US2017/032995
Publication Date: Fri Dec 01 00:59:59 CET 2017 International Filing Date: Thu May 18 01:59:59 CEST 2017
IPC: H04L 29/06
G06F 21/31
G06F 21/45
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: PLOTNIK, Idan
DOLINSKY, Michael
KRIGSMAN, Sivan
BE'ERY, Tal Arieh
DAVID, Gil
SIMAKOV, Marina
Title: DISTINGUISHING VERTICAL BRUTE FORCE ATTACKS FROM BENIGN ERRORS
Abstract:
Brute force attacks on a given account with various password attempts are a common threat to computer security. When a suspected brute force on an account is detected, systems may lock the account from access, which is frustrating to users and time consuming for administrators in the event of a false positive. To reduce the number of false positives, brute force counterattacks are taught in the present disclosure. A brute force counterattack is used to learn whether the login attempts change the passwords attempted, and are to be classified as malicious, or keep the attempted password the same in multiple attempts, and are to be classified as benign.