London ( CNN ) -- Police in London said Thursday they have arrested two men as part of an international investigation into computer hacking groups Anonymous and LulzSec . The men , ages 24 and 20 , were arrested in South Yorkshire and Wiltshire , police said . They are suspected of conspiring to commit offenses under the Computer Misuse Act of 1990 . `` The arrests relate to our enquiries into a series of serious computer intrusions and online denial-of-service attacks recently suffered by a number of multinational companies , public institutions and government and law enforcement agencies in Great Britain and the United States , '' said Det . Mark Raymond of the Metropolitan Police Service 's Central e-Crime Unit . The name `` Kayla '' was used in the suspected intrusions , police said in a statement . `` Denial of service '' attacks overload website servers . Hacking groups such as Anonymous and LulzSec have claimed a number of high-profile attacks in recent months , stealing information from the U.S. Senate and Arizona state police websites , as well as data from major corporations like Sony , Bank of America and Nintendo . They 've also successfully blocked access to the websites of Visa , MasterCard , the CIA and several News Corp. newspaper websites . Police in Britain , the United States and elsewhere have made a number of arrests of suspected `` hacktivists '' in recent months .
Pair said to be linked to computer hacking collectives Anonymous and LulzSec . Score: 6 Police have made a number of arrests over the summer .