Showing posts with label Security. Show all posts
Showing posts with label Security. Show all posts
Friday, March 28, 2025

Ruminating on AI Security

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Artificial intelligence has evolved from a distant vision into a transformative force reshaping industries and daily life. Yet, alongside it...
Sunday, September 10, 2023

Ruminating on Clickjacking

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Clickjacking is a sort of cyberattack in which people are tricked into clicking on something they did not plan to click on. This can be acco...
Monday, July 31, 2023

Ruminating on Differential Privacy

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Differential privacy (DP) is a mathematical paradigm for protecting individuals' privacy in datasets. By allowing data to be analysed wi...
Monday, May 30, 2022

Hash Length of SHA 265

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It is important to note that any hash algorithm always returns a hash of fixed length.  SHA256 returns a hash value that is 256 bits - i.e. ...
Sunday, May 29, 2022

Does Bitcoin encrypt transactions?

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 * It is important to note that the core bitcoin network/ledger does not use any encryption. It is all hashing as explained here -  https://...

Ruminating on Elliptic Curve Cryptography

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When it comes to symmetric encryption, the most common standards are Data Encryption Standards (DES) and Advanced Encryption Standards (AES)...

Ruminating on Proof of Work

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While I understood how bitcoin mining worked, there were still a few strings loose in my mind on why exactly was the 'Proof-of-Work'...

Numeric value of a hash

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In the bitcoin network, miners have to compare the hash value during the 'Proof-of-Work' process. The target hash value is stored in...
Friday, October 02, 2020

Ruminating on Automation (RPA) Security Risks

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 Intelligent automation & RPA can drive operational efficiencies at organizations and help boost the productivity of enterprise resource...
Sunday, May 31, 2020

Ruminating on Mutual Authentication

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In mutual authentication, both the server as well as the client have digital certificates and authenticate each other. If both the server a...
Wednesday, December 12, 2018

Blockchain in Healthcare

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The usage of blockchain in healthcare is gaining traction. Any information that can be privately and securely shared between payers and pro...
Monday, February 19, 2018

Adding custom filters to Spring Security

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One of my teams was looking for an option for adding filters on the Spring Security OAuth Server. As we know, the Spring Security OAuth2 ...
Sunday, November 19, 2017

Encrypting sensitive data in Spring application.properties file

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If you want to encrypt passwords, keys and other sensitive information in your application.properties file, then you have a nifty solution ...
Friday, November 17, 2017

Changing the hashing algorithm for passwords

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Recently, one of my teams wanted to update their password hashing algorithm that was in use for more than 2 years. As discussed here , pass...
Tuesday, October 10, 2017

Generating secure keys for encryption

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Very often, we need to create secure keys that can be used in digital signatures or for signing a JWT. It is very important to create a se...
Monday, May 23, 2016

API keys providing a false sense of security !

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We have seen so many API implementations wherein an API key is the only thing used to secure APIs. API keys are typically long alphanumeric...

HTTP proxy tools for capturing network traffic

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In the past, we had used tools such as Fiddler and Wireshark  to analyse the network traffic between clients and servers. But these tools n...
Friday, May 20, 2016

Utilizing Azure AD for B2C mobile apps

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We had successfully utilized Azure Active Directory for authentication of enterprise mobile apps. But can Azure AD be used for B2C apps? Th...
Wednesday, May 11, 2016

Ruminating on JWT

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JWT (JSON Web Token) has gained a lot of traction in the past couple of years and is slowly becoming the standard choice for all authentica...

Ruminating on Biometric security

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Fingerprint scanners are becoming ubiquitous in many smartphones. There are also a few other pure software biometric solutions that are gai...