Google has raised the bounties it pays independent researchers for reporting bugs in its core websites, services and online applications to $20,000.
The search giant boosted the maximum reward from $3,133, and also added a $10,000 payment to the programme.
The Vulnerability Reward Program will now pay $20,000 for vulnerabilities that allow remote code execution against google.com, youtube.com and other core domains, as well as what the company called "highly sensitive services" such as its search site, Google Wallet, Gmail and Google Play.
Remote code flaws found in Google's web apps will also be rewarded $20,000.
The term "remote code execution" refers to the most serious category of vulnerabilities, those which when exploited allow an attacker to hijack a system and/or plant malware on a machine.
A $10,000 bounty will be paid for SQL injection bugs or "significant" authentication bypass or data leak vulnerabilities, Google said in its revised rules.
Other bugs, including cross-site scripting (XSS) and cross-site request forgery (XSRF) flaws, will be compensated with payments between $100 and $3,133, with the amount dependent on the severity of the bug and where the vulnerability resides.
Google explained the higher bounties as ways "to celebrate the success of this [program] and to underscore our commitment to security."
The website and web app reward program debuted in November 2010, and followed Google's January 2010 launch of a bug bounty program for its Chrome browser. Google paid out about $180,000 in Chrome bounties last year.
The maximum award for reported Chrome vulnerabilities remains at $3,133, Google confirmed.
Since VRP's introduction, Google today said it has received more than 780 eligible bug reports, and in just over a year, paid out around $460,000 to approximately 200 researchers.
"We're confident beyond any doubt the program has made Google users safer," said Adam Mein, a Google security program manager, and Michal Zalewski, a engineer on the Google security team.
Google has shown that upping bounty payments will shake loose vulnerabilities it wasn't aware existed.
Last month, the company wrote $60,000 cheque to two researchers at Pwnium, the Chrome hacking contest it ran at the CanSecWest security conference in Vancouver.
Both researchers revealed bugs and associated attack code that demonstrated how hackers could escape the browser's isolating, anti-exploit 'sandbox', to hijack the browser and plant malware on a machine.