Tech giant Google has officially acknowledged the widely-known fact that Android's update system is far from perfect. The issues with the Android system of updates are apparently rooted in Google's dependence on Android device manufacturers and wireless carriers for rolling out updates.

Admitting that Google has not been able to develop a successful strategy to get the manufacturers of Android devices to update their software in a timely manner, the company's Android chief Hiroshi Lockheimer said at the Google I/O developer conference that Android's current system of updates is "not ideal."

Google's present strategy is to lean most heavily on security updates, for which it has been working with Android-device manufacturers to achieve a target of rolling out security updates on the monthly basis.

The problem with the existing strategy is that issuing monthly updates is not sufficient to ensure the security of Android devices, especially in an environment in which hacks are happening every week, and new vulnerabilities are being detected within hours.

In an indication that Google is trying to address the issues with Android's update system, a Bloomberg report -- citing unidentified sources familiar with the matter -- has revealed that the company has aggressive efforts underway to put pressure on carriers to expedite the update process. As per the report, Google has "drawn up lists that rank top phone makers by how up-to-date their handsets are, based on security patches and operating system versions."