do_update_check

See hook in action

See this hook used in plugins:

Select Pluginsiteguard.1.4.3siteguard.1.5.0siteguard.1.5.1siteguard.1.5.2siteguard.1.6.0siteguard.1.6.1siteguard.1.7.1siteguard.1.7.2siteguard.1.7.3siteguard.1.7.5siteguard.1.7.6