German newspaper Der Spiegel reports that British spy agency GCHQ set up fake LinkedIn and Slashdot pages to plant malware within Belgacom, a Belgian telecommunications company. Using a method called quantum insert, the GCHQ was reportedly able to preempt legitimate access to the websites, redirecting the employees to fake sites that compromised their computers. Der Spiegel reports that the GCHQ and NSA were also able to infiltrate the Vienna headquarters of the Organization of Petroleum Exporting Countries (OPEC). The report is the latest based on documents provided by whistleblower Edward Snowden. On September 20th, Der Spiegel reported that the GCHQ hacked Belgacom under a project codenamed Operation Socialist, in order to enable better exploitation of the telecommunications provider.