Creating IOCP and associating it with the file handles is done via the CreateloCompletionPort API function:
HANDLEWINAPICreateIoCompletionPort(_In_ HANDLE FileHandle,_In_opt_ HANDLE ExistingCompletionPort,_In_ ULONG_PTR CompletionKey,_In_ DWORD NumberOfConcurrentThreads);
Handle from the FileHandle parameter is associated with a new or existing completion port.
When the asynchronous I/O request for the IOCP-related file is completed, I/O manager creates an I/O completion packet and places it in the queue.
Packets are extracted from the queue when a worker thread calls the GetQueuedCompletionStatus API function:
BOOLWINAPIGetQueuedCompletionStatus(_In_ HANDLE CompletionPort,_Out_ LPDWORD lpNumberOfBytesTransferred,_Out_ PULONG_PTR lpCompletionKey,_Out_ LPOVERLAPPED * lpOverlapped,_In_ DWORD dwMilliseconds);
This guide will cover certain ways to detect restart or shutdown of the PC, as well as other similar events, such as log off or sleep.
Our function analyzes input parameter data, decides which event has occurred and executes certain code as a response to this event.
In order to catch shutdown event in a console application, we should start by creating our own handler function:
BOOL WINAPI HandlerRoutine(_In_ DWORD dwCtrlType);
Next, register it as a handler for this console application by using the following API function:
BOOL WINAPI SetConsoleCtrlHandler(_In_opt_ PHANDLER_ROUTINE HandlerRoutine, _In_ BOOL Add);
Being an expert in this field, I know how hard it is to restore files after shift delete.
So today, I will be telling you ‘how to recover files from shift delete manually and for free’
Some days back, I got a question on the same topic and the question was like this:
How to recover shift deleted files?
If yes, how you dealt with this problem?
Most of them replied that they had no idea that there even exist any free procedure through which they can restore files after shift delete without any hassle.
In this post, we will discuss Windows files and folders that you can delete and why you may want to remove them.
You can also go clear up space by going to Settings (press Windows and I key together)
On the Settings page, click System and then from the left pane, navigate and click Storage.
Before deleting all the files and folders, you can check if you have any important file worth restoring, click Restore.
The Rempl folder consists of various small files and a few Task Manager processes are connected to it as well.
You can delete Rempl folder and there are no side effects to it.
It also gives you a random solution to log out from your account first and then get into your account by signing in.
Then navigate to the “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList.”
Now search for the folder with ProfileImagePath indicating to c: users.
After that, you have to reboot your system and then sign in with an activated user account.
Now, the directory storage location through a text will present on your display which reads: C:\Users\(Your User)\documents.
Now, Sign out from your existing account and then re-log into your issue, creating an account.
Ransomware or WannaCry is a type of malicious software designed to block access to a computer system until a sum of money is paid.
In last few year you can heard news about ransomware virus which locked the computer and files encrypted by malicious programs designed to extort money from users.
Keep in mind, AV is based on signatures so new variants may and will slip through the cracks, but this could easily be a first line of defense.
Make sure all your users understand the dangers of ransomware and how to recognize phishing attempts.
I know this is of course a highly political and even cultural request to make, however reducing privileges will reduce the attack surface significantly.
End users shouldn’t be downloading and installing games anyway, right?
The EaseFilter Transparent File Level Encryption Library allows Clients to incorporate transparent on-access, per-file encryption into their products.
Transparent auto file encryption performs real-time data encryption and decryption of the files in any block data with 16 bytes in memory.
The encryption uses a 256 bits symmetric key to encrypt or decrypt the data with AES encryption algorithm.
