Google announced Wednesday it was bringing its digital assistant to Apple iPhones as part of its effort to win the battle with tech rivals on artificial intelligence.

At its annual developers conference at an outdoor concert-venue near its main campus in Mountain View, California, Google unveiled its vision for computing centered around artificial intelligence.

The Ukrainian presidency said its website had been attacked by Russia in apparent retaliation for Kiev's decision to block prominent Moscow-based social networks. 

Ukraine on Tuesday blocked Russia's most popular social media networks and an internet search engine in response to the Kremlin's alleged backing of a three-year separatist war in the east.

As communities around the world face continuing human rights challenges, the agreement demonstrates the potential to use technology to help tackle issues, and highlights the opportunity for greater private sector support for the work of the UN Human Rights Office.

GENEVA/REDMOND, USA (16 May 2017) – The Office of the UN High Commissioner for Human Rights today announced a landmark five-year partnership with Microsoft. As part of the agreement, Microsoft will provide a grant of USD 5 million to support the work of the UN Human Rights Office. This represents an unprecedented level of support from a private sector organization.

Microsoft warned governments Sunday against storing computer vulnerabilities like the leaked one at the heart of the cyberattack that has crippled computers in more than 150 countries.

"The governments of the world should treat this attack as a wake up call," Microsoft's president and chief legal officer, Brad Smith, wrote in a blog post about what is being called the largest ransomware attack ever.

"Hundreds of thousands" of Chinese computers at nearly 30,000 institutions including government agencies have been hit by the global ransomware attack, a leading Chinese security-software provider has said, though the Asian impact has otherwise been relatively muted.

The enterprise-security division of Qihoo 360, one of China's leading suppliers of anti-virus software, said 29,372 institutions ranging from government offices to universities, ATMs and hospitals had been "infected" by the outbreak as of late Saturday.

Governments and computer experts girded Monday for a possible worsening of the global cyberattack that has hit more than 150 countries, as Microsoft warned against stockpiling vulnerabilities like the one at the heart of the crisis.

The unprecedented global ransomware cyberattack has hit more than 200,000 victims in more than 150 countries, Europol executive director Rob Wainwright said Sunday.

Twitter shares shot higher Wednesday after its quarterly update showed improving growth in user numbers, offsetting concerns over a decline in revenue and another net loss for the social network.

The first quarter results came in better than most forecasts for Twitter, which has struggled to keep pace in the fast-moving world of social media.

Israeli authorities said on Wednesday that they had detected planned cyber attacks against 120 public and private targets in Israel but did not specify the intended victims.