Kunal-Chowdhury.com - Microsoft Technology Blog for developers and consumers: Security
Showing posts with label Security. Show all posts
Showing posts with label Security. Show all posts

Affected by WannaCry ransomware? A decryptor tool is now available

You might have already heard about 'WannaCry' or 'WannaCrypt' ransomware which affected many outdated Windows system across the globe and demanded BitCoins worth $300 to decrypt the affected files. This was spread via a vulnerability on Windows system.

 

Though a fix was already given by Microsoft to safeguard the attack, but a tool to decrypt the affected PC has been recently published by security researchers.



ATTN: How to protect your system from #WannaCry #ransomware?

In last few days, you might have heard about 'WannaCry' or 'WannaCrypt' ransomware which spread affected many systems across the globe. This was spread like a worm by using the Windows SMB vulnerability, which was patched in March.

 

You might become a victim, if you are not running Windows 10 and not yet patched your system with all the security updates that Microsoft released.


How to view the connected Wi-Fi password on #Windows?

Windows provides a Wi-Fi security page, from where you can view the connected Wi-Fi connection’s password or network key. By default, the key remains hidden but you can view it anytime. There might be some reason when you want to retrieve or view the password.

 

Today in this blog post, we will learn how to retrieve it. For this to work, you must connected to that network at least once. Continue reading to know more.


How to set folder permission using C# code?

Not every system has the right folder permission set to all user account and hence, sometime we need special access to specific folder during installation or while executing the application. It is not possible to manually set it up by browsing the folder and hence an automation is mandatory.

 

If you are looking for a way to set the right permission to specific folder(s) using C# code, this post will help you. Continue reading to learn more about it and grab the code.


Simplest way to Encrypt and Decrypt of data in Windows Phone apps

Sometime we need to provide an encryption mechanism to protect user data in phone and/or sharing the data over internet to a database. Data security should be always maintain by a developer to protect the content of the application that the user enters.

 

If you are building an app and looking for some way to implement the mechanism, here is a wrapper class for you to do encryption and decryption of a string literal easily.


How to turn ON/OFF the Microsoft Two-Step Verification?

In the last post “What is Two-Factor Authentication?” we discussed about various factors of authentication system including different examples. We also learnt about Knowledge Factor, Inherence Factor and Possession Factor.

 

Microsoft recently added a second step authentication mechanism in all their accounts as an extra security layer. This post will guide you to turn ON/OFF this security layer.


What is Two-Factor Authentication?

Two-factor authentication is a user authentication system where an user needs to provide two different factors to authorize the user’s identity. It is not a new concept and in many places we are knowingly or unknowingly using it for secure access.

 

There could be multiple factors too and that known as Multi-factor authentication. Today in this post we will learn basics about this type of authentication system.


Microsoft Security Advisory (2659883) - Vulnerability in ASP.NET Could Allow Denial of Service

Today I received this “Security Alert” from Microsoft via email and thought to share this with you. If you are using ASP.Net in your server, read this post to know about it to keep your server in good health from this DoS Attack. Sharing the email as it is in this post.

 

Microsoft is aware of detailed information that has been published describing a new method to exploit hash tables. Attacks targeting this type of vulnerability are generically known as hash collision attacks. Attacks such as these are not specific to Microsoft technologies and affect other web service software providers. This vulnerability affects all versions of Microsoft .NET Framework and could allow for an unauthenticated denial of service attack on servers that serve ASP.NET pages.

 
© 2008-2017 Kunal-Chowdhury.com - Microsoft Technology Blog for developers and consumers | Designed by Kunal Chowdhury
Back to top