Apple is very frugal with Tim Cook's protection costs, while Facebook generously pays up to $20 million to ensure security for Mark Zuckerberg.

Jack Dorsey: $68,500

According to information last disclosed in 2016, the annual security cost for Twitter CEO Jack Dorsey was $68,506. Since returning to lead this social network in 2015, he has only received a symbolic salary of $1.4.

Eric Schmidt: $296,353

Eric Schmidt stepped down as Google Chairman in 2018. While in office, the company spent $296,353 annually to protect him. Currently, his total net worth is valued at $13.2 billion.

Tim Cook: $310,000

Apple spent $310,000 on CEO Tim Cook in 2018. By Silicon Valley standards, this is a very modest expenditure, especially given that Apple is among the most valuable companies in the world.

Sundar Pichai: $1.2 million

Google spent $1.2 million to protect CEO Sundar Pichai in 2018, nearly double the $680,000 spent in 2017.

Jeff Bezos: $1.6 million

The world's richest person does not spend the most on personal security. Forbes reports that the amount Amazon spends to protect Bezos has remained unchanged since 2012, even though his fortune has grown to $113 billion. An Amazon spokesperson stated that Bezos also pays a portion of his security costs out of his own pocket.

In November 2018, Amazon installed bulletproof panels in Bezos's office at a cost of $180,000. They can withstand multiple rifle shots.

Larry Ellison: $1.6 million

Oracle pays $1.6 million annually to protect Co-founder, Executive Chairman, and CTO Larry Ellison. This includes security costs for his primary residence, which Forbes speculates is the Woodside estate, although the company declined to comment.

Dara Khosrowshahi: $2 million

Uber's recent IPO filing revealed that the annual security expenditure for CEO Dara Khosrowshahi is $2 million, nearly equivalent to his bonus.

Sheryl Sandberg: $2.9 million

The cost to protect Ms. Sandberg increased by $200,000 in 2018, and Facebook spent one million dollars for the COO to travel via private jet.

Mark Zuckerberg: $20 million

Facebook spent $10 million on Zuckerberg's protection last year, an increase of $2.5 million from the previous year. He also received an additional $10 million "pre-tax allowance" for extra costs to keep himself and his family safe. Protection is conducted 24/7. Outside his residence, there are always armed guards on duty.

Elon Musk, Larry Page, Sergey Brin: Undisclosed

Tesla does not disclose the security costs for billionaire Elon Musk, who is noted by the American press for having statements that can easily cause offense and resentment in Silicon Valley.

Similarly, security costs for Google's two co-founders, Larry Page and Sergey Brin, are kept private. The last time Google released this information was in 2006, with travel, logistics, and protection costs for Larry totaling only $33,195. He is currently the CEO of Alphabet, Google's parent company.