What is Ahead-of-Time Intervals in Java?

Video presentation of experimental Ahead Of Time intervals by two skilled developers 
04 August 2017   1401


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Vladimir Kozlov,  principal technical staff member at Oracle, and Igor Veresov talked about the inner workings of the experimental AOT implementation - compilation phases, changes to Graal to support AOT, library sections, code execution model, novel approaches to profiling, runtime support.

AOT motivations:

  • Needed for long term strategy of supporting Future Java based JIT compiler.
  • Faster startup for the apps, with Hot Methods and class Initializers available.
  • Provide quicker time to peak performance.
  • Density improvement.

Additionally, strong and weak sides of AOT are discussed. Performance results. Future plans (cpu/os ports, CDS integration, heap serialization). 

New Vulnerability to be Found in Google+

Due to this vulnerability it was possible to obtain private information of 52.5 million accounts
11 December 2018   105

Google decided to close the social network Google+ not in August 2019, but in April. The reason was another vulnerability in the API, due to which it was possible to obtain private information of 52.5 million accounts. The company plans to close the social network API until mid-March 2019.

By December 10, 2018, the following error information was published:

  • Third-party applications requesting access to profile data, because of the bug in the API, received permission to view information, even if it is hidden by privacy settings;
  • the names of users, their email addresses, information about occupation, age and other confidential information were at risk;
  • passwords, financial data and national identification numbers have not been compromised;
  • the company has no evidence that anyone has exploited the vulnerability;
  • the error was fixed within 6 days: from November 7 to November 13, 2018.
  • Google said it sends notifications to all users affected by the bug.

The previous data leak of Google+ users occurred in October 2018. Then about 500 thousand accounts were compromised. The attackers could get the names, email addresses, age, gender and occupation of users.