Security detection method and system

The invention discloses a security detection method. The method comprises the following steps: acquiring first branch record jump data of a current system through a branch record drive of a CPU (Central Processing Unit); converting the first branch record jump data into first address offset data; generating a static library according to all trusted jump offset data of the trusted system; comparing the first address offset data with the credible jump offset data in the static library one by one; and when one or more pieces of the first address offset data cannot be matched with the trusted jump offset data, determining that the current system is threatened. The invention also discloses a security detection system, an electronic device and a computer readable storage medium. Therefore, complete detection can be carried out based on a hardware level of a lower layer, the method is suitable for all CPUs with branch recording functions, the safety of the whole execution process of system codes can be detected, and