hiberfil.sys Windows 8.1 Delete to Free Up SSD Space

Disable Hibernation on Windows 8.1 to Remove hiberfil.sys for More Disk Space

This article provides a tutorial on removing the Windows hibernation file to free up disk space when a small solid state disk (SSD) is used as the system drive. Please ensure you have a backup of any data and files you need to keep before changing system configurations. This article is for information only. System configurations can vary widely, therefore any changes made are at your own risk. If you’re confident with computers and understand the meaning of the hiberfil.sys file you can skip to the end of the article for the relevant command, which is to run powercfg -h off at the administrator’s command prompt, otherwise read on for a better understanding.

Background

Low Disk Space on a Windows SSDApart from low end systems a SSD drive is standard fitting to most computers and laptops. An SSD is also a common upgrade to older systems. A SSD is more expensive than a hard disk drive, as a result small capacity SSDs (less than 128 GB) may be used to keep costs down. Windows 8.1 requires 20GB for installation, modern computing demands soon eats into the the remaining space. A system can be configured to use a small SSD for the Windows system and a large multi-terabyte  hard drive for data storage (see Move My Documents and Other Personal Folders). Despite this, or if a second drive is not an option, the SSD may fill up quickly with normal use. Once the SSD is full the computer or laptop will not function properly, may not boot up, or show error messages at boot time. The worst case scenario is data corruption and loss, or even disk failure, when applications cannot handle running with no disk space available. Continue reading

Thunderbird Change Password for Email Account

Update or Change Password in Thunderbird to Access an Email Account

Occasionally it is required to change the password used to access email on the email server. If using an email client, for example Outlook or the free Mozilla Thunderbird app, the email password stored for the account will require updating. In Thunderbird the password is not stored under Account Settings but is stored under Security in Options. For Thunderbird change password is achieved by removing the stored password so that a prompt appears to enter the new password. This article explains the problem and how it is fixed.

Thunderbird LogoWhen a email account is added to Thunderbird the Mail Account Setup dialog has a box that allows the entry of the password for the account. A check box is used to ensure that the password is remembered (so it is not typed in each time Thunderbird is opened).

The settings for an email account in Thunderbird can be accessed in several ways, see the following list, however these settings do not give access to the password field:

  • Bring up the context menu (usually right-click in Windows) on the account name, in the folder view, and selecting Settings.
  • Select View settings for this account when the account is selected in folder view.
  • Use the menu button next to the search box and select Options and then Account Settings.

If the email account password has changed Thunderbird will not be able to login to receive and send emails. Hopefully the option to renter a new password will be given: Continue reading

Visualization for Cyber Security Conference List of Papers

All Papers from the Annual Visualization For Cyber Security Symposium

Whilst researching novel methods for visualising data from computer security systems the VizSec conference proceedings looked interesting. VizSec is short for Visualization for Cyber Security. This is an annual symposium dedicated to the use of visualisation techniques to help with the complexity of monitoring the large modern systems we all use. System security has become a big data problem and only efficient data analytics will help manage it.

The 11th International Symposium on Visualization for Cyber Security takes place in November 2014. The papers from the previous 10 years of symposiums are available from different institutional or publisher web sites. This means there is not a single search available to get one list of all the papers presented at VizSec over the years. Therefore visits to several web pages and web sites are required to put together the list of all papers presented at VizSec. Since this has now been done that list is published here. Therefore you don’t need to repeat the work. Continue reading