Category: facebook

May 06 2019, 04:39

Wrote a lengthy longread about login forms and authentication in general, and within Hybris specifically. Best practices and common mistakes. Analyzed RememberMe, Brute Force Attack Protection, and other issues within this narrow topic. Welcome!


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Login Forms and Authentication in E-Commerce: Improving Customer Experience and Security
https://hybrismart.com/2019/05/05/customer-authentication-and-login-forms-sap-commerce-cloud/

May 05 2019, 13:38

It turned out to be a Sukhoi Superjet 100

… A large number of employees at the Siberia factory, responsible for working on the assembly of SSJ aircraft, were discovered to have falsified their university engineering degrees.

In 2012, a Superjet crashed into a mountain in Indonesia during a sales demonstration flight, carrying 37 aviation industry executives, members of the media, and eight crew members, killing everyone on board. Globally, the safety of the new aircraft was under scrutiny. The crash investigation revealed that the aircraft’s automatic collision avoidance system (designed to detect mountainous terrain) ‘was operational’, but had been ‘ignored by the pilot’, who was ‘possibly distracted by a conversation with a potential customer for the aircraft’. Consequently, pilot error was determined to be the primary cause of the crash.

In late 2016, 11 of Interjet’s SSJ100s were grounded due to a stabilizer (tail) defect. Russia’s Federal Air Transport Agency issued an airworthiness directive requiring “detailed inspection of the stabilizer joint straps and bracket attachment bands”. During this period, I spoke to a friend who was one of the world’s few SSJ pilots, flying for the Mexican airline. We met at the Farnborough Air Show in the UK, one of the industry’s largest trade events. What he told me was, frankly, eye-opening. For the sake of anonymity, I’ll refer to him as ‘George’. Over coffee, George revealed that he had decided to resign from Interjet, due to a lack of trust in the aircraft he piloted. He stated, “When we report genuine technical issues with this aircraft, Russia retaliates by telling Interjet that it is us [pilots] who are mishandling the aircraft”. George further described how he felt that the genuine concerns of the crew operating this new Russian jet were not being adequately addressed, leading him to leave the airline — he is now flying for Aeromexico.

https://www.google.com/amp/s/aviationanalyst.co.uk/2018/11/04/the-airlines-ditching-unreliable-russian-sukhoi-superjets/amp/

April 30 2019, 11:19

I just bought a Power Bank and stumbled upon products on Wish-e – 900000 mAh. Do these guys even realize how much a 900 amp-hour battery should weigh? About 60-80 kilograms including the box to fit it all in. Here, for example, is a two-volt 1000 Ah battery for sale: https://www.thesolarbiz.com/crown-batteries-2v-1000-ah-battery.html?fee=1&fep=199&gclid=Cj0KCQjw5J_mBRDVARIsAGqGLZA4I31w_uL5NKSHqCBpTLeUjg1lZPzg9RdxzfXGtVKhSOcGH98C7nIaAjAiEALw_wcB

Don’t fall for the scam. A fairly stable indicator of battery quality is its weight. “Off-brand” manufacturers try to reduce weight for higher capacity numbers. This is needed for marketing purposes, and it also lowers the cost of production, regardless of what’s inside. Normal manufacturers understand that the laws of physics can’t be circumvented, and they need to either reduce the capacity number or not fuss with the weight and offer a heavier battery. The greater the capacity, the more currents, and roughly speaking the wiring and electricity heavier it needs to be.

A 10000 mAh should weigh at least 210 grams. Accordingly, a 20000 mAh should weigh at least 420 grams.

There’s also the concept of Energy Density – https://www.epectec.com/batteries/chemistry/ which is energy per unit volume. This means that a 20000 mAh should be exactly twice as large as a 10000 mAh. It should consist of twice as many cells inside (looking like AA batteries).