DynamoDB and Other Stories

Regular expression is a powerful tool that helps extract data from text including documents, system logs, and code. In this article, we will look at working with regular expressions in detail. — ^([a-zA-Z0–9_\-\.]+)@([a-zA-Z0–9_\-\.]+)\.([a-zA-Z]{2,5})$ “^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$” /^\d{2}\/\d{2}\/\d{4}$/ Ever seen these weird symbols before? If you are a developer, you might have seen them being used while checking for password validation, finding dates from text, and a few other places. This is called a Regular Expression.

Pandas is a Python package that helps you to easily work with large datasets while building a machine learning model. — When you are working on Machine learning projects, you’ll be handling a large amount of data. You will have to perform a lot of complicated operations on those data like merging, sorting, normalizing, and so on. There are few tools that will help you accomplish this but Pandas stands out…

Introducing Amazon DynamoDB, the fully managed, scalable, and secure NoSQL database from Amazon Web Services. — What is DynamoDB? DynamoDB is a fully managed NoSQL database from AWS. DynamoDB is similar to other NoSQL databases like MongoDB, except for the fact that you don’t have to do any maintenance or scaling on your part. DynamoDB can handle more than 10 trillion requests per day and can support peaks of…

Nikto is an open-source scanner that helps find vulnerabilities in web servers. You can scan your web apps for vulnerabilities like misconfigured services, dangerous files, and thousands of other potential security issues using Nikto. — Websites are a critical part of almost every business or organization in the world. From your nearby florist to global brands, almost everyone uses a website as part of their branding.

Social engineering is the technique by which an attacker can make a person do something that is not usually in their best interest. In this article, we will look at a few common ways Social Engineers try to manipulate you. — Disclaimer: My articles are purely educational. If you read them and cause damage to someone, that's on you. I don't encourage any malicious activity or black hat practices. Read the code of ethics here.

Numpy is a python library for performing large scale numerical computations. It is extremely useful, especially in machine learning. Let's look at what Numpy has to offer. — Introduction NumPy is a Python library used to perform numerical computations with large datasets. Numpy stands for Numerical Python and it is a popular library used by data scientists, especially for machine learning problems. NumPy is useful during pre-processing the data before you train it using a machine learning algorithm.

Aircrack comprises of a suite of tools that help you attack as well as defend wireless networks. Let's look at what Aircrack has to offer. — Imagine a world without wifi. We would still be using long wires of ethernet cables to connect to the internet. There is no debate on how much WiFi has made our lives easier. Now we can connect to the internet on coffee shops, subway stations and almost anywhere we go.