The 2.54Tbps DDoS attack in 2017 was coordinated and planned over a period of six months, Google said.
Alongside these, critical infrastructure sectors such as oil and gas also come under heavy attacks from the internet.
Telegram was recently struck by a distributed denial of service (DDoS) attack.
More than half of all IoT attacks originate from China and the U.S.
Internet Service Providers has registered a police complaint against Distributed Denial of Service (DDOS) attack by hackers in Mumbai.
The hacking team hit Pokemon Go's login servers with a distributed denial of service (DDoS) attack leaving some players frustrated as they were unable to log in to the game.
The BBC's online services, including its news website and iPlayer catch-up TV platform, were taken down for a few hours on Thursday by a large DDoS attack.
The Linux-based botnet has been known for over a year, however, it was only recently found attacking systems by compromising embedded devices like routers and then gaining SSH access.