acquired "eLama", digital advertising platform, waiting for the approvement from Federal Antimonopoly Service. That same month Yandex has also bought "BandLink" music service. Finances The company became profitable in November 2002. In 2004, Yandex sales increased to $17 million, up 1000% in 2 years. The net income of the company in 2004 was $7 million. In June 2006, the weekly revenue of Yandex.Direct context ads system exceeded $1 million. The company's accounting has been audited by Deloitte since 1999. On May 24, 2011, it raised $1.3 billion in an initial public offering on NASDAQ, the biggest initial public offering for a dot-com company since Google's offering in 2004. Among the largest investors were Baring Vostok Capital Partners, which owned a 30% stake, and Tiger Management, which owned a 15% stake. In 2013, Yandex became the largest media property in Russia by revenue. Security On June 1, 2017, Yandex closed its offices in Kyiv and Odesa, Ukraine after the Security Service of Ukraine raided the offices and accused the company of illegally collecting Ukrainian users’ data and sending it to Russian security agencies. The firm denied any wrongdoing. In May 2017, all Yandex services were banned in Ukraine by Presidential Decree No. 133/2017. In October and November 2018, Yandex was targeted in a cyberattack using the Regin malware, aimed at stealing technical information from its research and development unit on how users were authenticated. An investigation by Kaspersky Lab attributed the hacks to Five Eyes intelligence agencies. In June 2019, RBC News reported that Yandex had refused a request by the Russian Federal Security Service (FSB) under the Yarovaya law to surrender encryption keys that could decrypt the private data of its e-mail service and cloud storage users. The company argued that it was impossible to comply with the relevant law without compromising its users' privacy. Maxim Akimov, Deputy Prime Minister of Russia, said that the government will take action to relieve FSB pressure on the company. Alexander Zharov, head of the Federal Service for Supervision of Communications, Information Technology and Mass Media, subsequently said that Yandex and the FSB had reached an agreement where the company would provide the required data without handing over the encryption keys. In February 2021 Yandex admitted that one of their system administrators with access rights to Yandex's email service had enabled unauthorized access, leading to almost 5,000 Yandex email inboxes being compromised. On January