The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2022
Filed:
May. 27, 2021
Korea Internet & Security Agency, Jeollanam-do, KR;
Do Won Kim, Jeollanam-do, KR;
Seong Min Park, Jeollanam-do, KR;
Bo Min Choi, Jeollanam-do, KR;
Young Kwon Park, Jeollanam-do, KR;
Jin Hyun Cho, Jeollanam-do, KR;
Hyung Jin Cho, Jeollanam-do, KR;
Sung Moon Kwon, Jeollanam-do, KR;
KOREA INTERNET & SECURITY AGENCY, Jeollanam-do, KR;
Abstract
Provided is a method for detecting abnormal traffic. The method comprises collecting non-access stratum (NAS) traffic between a user equipment (UE) and a mobility management node, identifying a ciphering algorithm supported by the UE from a network access request message transmitted from the UE to the mobility management node, and identifying the UE as a first type of terminal at risk based on a determination that the UE only supports a null ciphering algorithm.