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Many suffer from the fear of public speaking (Glossophobia) and it seemed fit that the remedy is to simply face the fear. One of the cornerstones for public speaking and in fact for any task is — preparation, preparation and more preparation.

Step 0: Call for Papers

One of the hardest lessons learnt during the whole process of proposing talks, is to accept rejection with a smile and propose for the next conference. Conferences look for few important characteristics in a proposed talk and more importantly in the speaker as well.

A talk to be lucrative needs to have a unique title, target a broader…


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Continuing from Part 1, this post discusses that last component of the authentication server that is essential to preserve the CIA Triad — Confidentiality, Integrity and Availability

We already discussed the usage of private-public keypair to verify the integrity of the token that it was indeed generated by the authentication server. However, the information within the token such as email address, ip address or other information pertinent to the user is not protected from the application which receives the token.

As the identity provider, it is essential for the tokens generated to be “confidentially” secure i.e., none of the information…


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With the recent trend in microservices and service based architecture, APIs have taken a front seat for attacks of different kinds. OWASP has even created a list of top security threats to APIs and it is quintessential to create a best in class API security system which is constantly updated to protect itself from such threats.

Token based authentication is one of the many steps that API security systems utilize to safeguard their resource APIs and this article describes some of the fundamental steps to consider while building your own api token system.

So what is an API?

There is…


Having been a software developer for a long time, there is no easy path to become a leader. Having been thrown into the deep end, i learnt my way around how to lead a team, groom and make the team come together. After two years of being the Identity Infrastructure Architect and the leader for that team, I presented the journey what we went through and the lessons learnt at the Deliver Conference in Winnipeg, Canada.

The deck that was used is available below and this post will be followed by a series detailing more about the path, lessons learnt and the way forward in upcoming days.


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Continuing the review of the BBC documentary of the Trillion Dollar Bet from Part 1

The Black-Scholes model were blocked by a need to instantaneously recalculate the dynamic hedging to keep eliminating the risk based on stock price changes continuously. Unknown to Black-Scholes at that time, someone else has found the way. Professor Robert C Merton (Harvard Business School) is a great analyst and already recognized as a pioneer for his intellectual capabilities. He was proficient in analyzing savings and investment behavior and has addressed age old questions in Economics.

Even during his college days, he was very interested in…


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Continuing with my suggested readings for Machine Learning for Trading, we reviewed this documentary on the beautiful formula called “Black-Scholes Model”, its Nobel Prize victory and how a company (Long Term Capital Management) made a bet of 1 trillion dollars using that formula and failed gloriously.

https://documentaryvine.com/video/midas-formula-trillion-dollar-bet

A 1999 BBC documentary which tells the story behind possibly the greatest options pricing formula ever created in finance, the Black-Scholes-Merton model which won the creators — three economists — a Nobel Prize. The formula had a far reaching effect on the financial markets.

The Holy Grail of the “Traders” trade

The Holy Grail of trading is to create a…


I have always yearned to share my knowledge and always on the look out to speak to external developers about my work at eBay and Identity/Security in general.

I spoke at multiple conferences this year — IndexConf, Silicon Valley Code Camp, API World and PRDC Deliver about API Security and how to “Build a strong token based API Security”

I have also written a detailed blog post on the same subject.

Quick Look

Many developers are well versed with domain based application development. However when it comes to security, there are very few who can ascertain to the credibility of their API…


https://en.wikipedia.org/wiki/Interactive_Brokers

Disclaimer: All the details mentioned here are from the movie and not independently researched to be accurate by the author. Any opinions expressed here are my own and do not reflect the opinions of my employer.

The final part of our review/observations of the movie ‘The Big Short” continues from Part 1 and Part 2 to a gripping climax.

At the Las Vegas Securitization Forum, Mark Baun happens to meet a CDO Manager. …


Photo by Lorenzo Cafaro from Pexels

Disclaimer: All the details mentioned here are from the movie and not independently researched to be accurate by the author. Any opinions expressed here are my own and do not reflect the opinions of my employer.

This is the continuation of the story from Part1 which introduces many to the world of collateralized debt obligations, subprime mortgages, credit default swaps and bundling leading to the depression of 2008.

The next important sequence happens when Jared Venett with Deutsche Bank (played by Ryan Gosling) learns about Dr. …


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Disclaimer: All the details mentioned here are from the movie and not independently researched to be accurate by the author. Any opinions expressed here are my own and do not reflect the opinions of my employer.

As part of my curriculum for Machine Learning for Trading (CS 7646) in my OMSCS course, we were asked to watch the movie “The Big Short” to learn how the market crash in 2008 happened, the sequence of events leading up to it and some of the key financial aspects and terms which are key to its plot.

The movie itself was released in…

Senthilkumar Gopal

Manage Seller Marketing at eBay.com. Love to code and solve hard problems. Blogs about code at http://sengopal.me & photographs at http://500px.com/sengopal

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