Windows 8 has reached end of support, which means Windows 8 devices no longer receive important security updates. We recommend making the free upgrade to Windows 8.1 to continue receiving security updates and support.
Upgrading your Windows 8 or Windows RT PC to Windows 8.1 or Windows RT 8.1 will also bring you enhancements in personalization, search, apps, the Windows Store, and cloud connectivity, all with the security and reliability features you expect from Windows.
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Beginning in July 2019, the Windows 8 Store is officially closed. While you can no longer install or update applications from the Windows 8 Store, you can continue using those already installed. However, since Windows 8 has been out of support since January 2016, we encourage you to update to Windows 8.1 for free.
Make sure you have enough free disk space. If you're currently running Windows 8, you need 3,000 MB of available space to install the 32-bit version of Windows 8.1 and 3,850 MB of available space to install the 64-bit version of Windows 8.1. On a Windows RT device, you need 2,250 MB of available disk space to install Windows RT 8.1.
The update will download and install in the background while you use your PC to do other things. The installer will check to make sure you have enough disk space, that your apps and devices will work with Windows 8.1 or Windows RT 8.1, and that you have all the required updates.In some cases, the installer might find something you need to take care of before you can continue installing the update. If so, you'll see a message telling you what you need to do.
Next, you'll be asked to sign in. If you already use a Microsoft account to sign in to Windows 8 or Windows RT, your account name will be filled in for you. If you previously used a local account, you can still use it to sign in
If you already have another PC running Windows 8.1 or Windows RT 8.1 and you chose to sync settings on that PC, then your OneDrive settings will also sync from your existing PC to this one and you might not see this screen.
Windows will save a backup copy of your PC settings to OneDrive. If something ever happens to your PC and you need to replace it, your settings are saved in the cloud and you can transfer them to a new PC instantly.
The only way to ensure that deleted files, as well as files that youencrypt with EFS, are safe from recovery is to use a secure deleteapplication. Secure delete applications overwrite a deleted file'son-disk data using techniques that are shown to make disk dataunrecoverable, even using recovery technology that can read patterns inmagnetic media that reveal weakly deleted files. SDelete (SecureDelete) is such an application. You can use SDelete both to securelydelete existing files, as well as to securely erase any file data thatexists in the unallocated portions of a disk (including files that youhave already deleted or encrypted). SDelete implements the Departmentof Defense clearing and sanitizing standard DOD 5220.22-M, to give youconfidence that once deleted with SDelete, your file data is goneforever. Note that SDelete securely deletes file data, but not filenames located in free disk space.
SDelete is a command line utility that takes a number of options. Inany given use, it allows you to delete one or more files and/ordirectories, or to cleanse the free space on a logical disk. SDeleteaccepts wild card characters as part of the directory or file specifier.
Securely deleting a file that has no special attributes is relativelystraight-forward: the secure delete program simply overwrites the filewith the secure delete pattern. What is more tricky is securely deletingWindows NT/2K compressed, encrypted and sparse files, and securelycleansing disk free spaces.
Compressed, encrypted and sparse are managed by NTFS in 16-clusterblocks. If a program writes to an existing portion of such a file NTFSallocates new space on the disk to store the new data and after the newdata has been written, deallocates the clusters previously occupied bythe file. NTFS takes this conservative approach for reasons related todata integrity, and in the case of compressed and sparse files, in casea new allocation is larger than what exists (the new compressed data isbigger than the old compressed data). Thus, overwriting such a file willnot succeed in deleting the file's contents from the disk.
Cleaning free space presents another challenge. Since FAT and NTFSprovide no means for an application to directly address free space,SDelete has one of two options. The first is that it can, like it doesfor compressed, sparse and encrypted files, open the disk for raw accessand overwrite the free space. This approach suffers from a big problem:even if SDelete were coded to be fully capable of calculating the freespace portions of NTFS and FAT drives (something that's not trivial), itwould run the risk of collision with active file operations taking placeon the system. For example, say SDelete determines that a cluster isfree, and just at that moment the file system driver (FAT, NTFS) decidesto allocate the cluster for a file that another application ismodifying. The file system driver writes the new data to the cluster,and then SDelete comes along and overwrites the freshly written data:the file's new data is gone. The problem is even worse if the cluster isallocated for file system metadata since SDelete will corrupt the filesystem's on-disk structures.
The second approach, and the one SDelete takes, is to indirectlyoverwrite free space. First, SDelete allocates the largest file itcan. SDelete does this using non-cached file I/O so that the contentsof the NT file system cache will not be thrown out and replaced withuseless data associated with SDelete's space-hogging file. Becausenon-cached file I/O must be sector (512-byte) aligned, there might besome leftover space that isn't allocated for the SDelete file evenwhen SDelete cannot further grow the file. To grab any remaining spaceSDelete next allocates the largest cached file it can. For both ofthese files SDelete performs a secure overwrite, ensuring that all thedisk space that was previously free becomes securely cleansed.
On NTFS drives SDelete's job isn't necessarily through after itallocates and overwrites the two files. SDelete must also fill anyexisting free portions of the NTFS MFT (Master File Table) with filesthat fit within an MFT record. An MFT record is typically 1KB in size,and every file or directory on a disk requires at least one MFT record.Small files are stored entirely within their MFT record, while filesthat don't fit within a record are allocated clusters outside the MFT.All SDelete has to do to take care of the free MFT space is allocatethe largest file it can - when the file occupies all the available spacein an MFT Record NTFS will prevent the file from getting larger, sincethere are no free clusters left on the disk (they are being held by thetwo files SDelete previously allocated). SDelete then repeats theprocess. When SDelete can no longer even create a new file, it knowsthat all the previously free records in the MFT have been completelyfilled with securely overwritten files.
The reason that SDelete does not securely delete file names whencleaning disk free space is that deleting them would require directmanipulation of directory structures. Directory structures can have freespace containing deleted file names, but the free directory space is notavailable for allocation to other files. Hence, SDelete has no way ofallocating this free space so that it can securely overwrite it.
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A set of encrypted code signing certificates were exfiltrated; however, the certificates were password-protected and we have no evidence of malicious use. As a preventative measure, we will revoke the exposed certificates used for the Atom application. Revoking these certificates will invalidate some versions of Atom.
Although the end of your life is something you probably don't want to dwell on, deciding what will happen to your assets and personal possessions after your death is important. Preparing a Will is the simplest way to ensure that your funds and property will be distributed according to your wishes.
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If you do not choose someone in advance and there is a time you are unable to make your own decisions, there are state laws that help your healthcare providers determine who can make those decisions for you. Some states provide a specific order or priority. Others require a healthcare provider to notify a broader group of family who are the directed to decide who will be the decisionmaker. Some states do not have any provision for who will become the decisionmaker.
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