Data detection method and apparatus

The invention discloses a data detection method and apparatus. The data detection method comprises: detection data for intrusion detection are obtained; the detection data are cached to an internal memory by a first process; the cached data are read from the internal memory by a second process, wherein the second process is different from the first process; and intrusion detection is carried out on the data read from the internal memory. With the method and apparatus, a problem that the intrusion behavior can not be detected timely because of long data detection time can be solved; and thus an effect of convenient and timely detection of an intrusion behavior due to intrusion detection time reduction can be realized.