Hackers targeted dozens of computer systems at government agencies across Europe in a series of attacks that exploited a recently discovered security flaw in Adobe Systems Inc's software, Reuters cited security researchers reports on Wednesday. Russia's Kaspersky Lab and Hungary's Laboratory of Cryptography and System Security, or CrySyS, said the targets of the campaign included government computers in the Czech Republic, Ireland, Portugal and Romania. The researchers, who declined to further elaborate on the victims' identities, released their findings as more than 20,000 security professionals gathered in San Francisco for the annual RSA conference. The researchers suspect MiniDuke was designed for espionage, but were still trying to figure out the attack's ultimate goal. -- SPA