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  HeartBleed: Inside the heart, what happens to a normal WEB user?

To be brief, our email, IM, facebook etc. are at the risk, so try to minimize the access in these few days. Especially we should try to avoid log into our internet-banking, because we may expose our user id and password. Also later when the service providers fix the bug, we would better to change a new password for all the web accounts that are important to us. Here comes the technical explanation. You might notice before that a lot of websites use URL starting with "https". For example, https:/...

   HeartBleed,Analysis     2014-04-09 22:41:43

  Python basics summary

Python is recommended by many people as the first language to be learned now. Even in some universities, it is the primary language to be taught to CS/CE students. To master this languages, we should understand some basics of it. Here we summarize some basics about this language. These basics include : string replacement with regular expression, traverse a directory, sort a list, remove duplication, dictionary ordering, dictionary, list, string conversion, date object manipulation, command line ...

   Python,Summary     2013-09-23 10:04:42

  What is Deep Web- all you need to know about it?

Deep web is the most nefarious out of sight underground area that exists and not accessible to the public domain. The deep web sites cannot be accessed through standard search engines. Many experts believe to have compared this part of the internet hidden from paywalls and forms. The truth is that deep web is a hidden iceberg while the usual internet available to the public domain is just the tip of the iceberg. That part of what is available from search engines such as Bing or Google ...

   DEEP WEB,DARK WEB     2018-07-05 08:26:58

  How big are PHP arrays (and values) really? (Hint: BIG!)

Upfront I want to thank Johannes and Tyrael for their help in finding some of the more hidden memory usage. In this post I want to investigate the memory usage of PHP arrays (and values in general) using the following script as an example, which creates 100000 unique integer array elements and measures the resulting memory usage: <?php $startMemory = memory_get_usage(); $array = range(1, 100000); echo memory_get_usage() - $startMemory, ' bytes'; How much would you expect it to ...

   PHP,Array,Memory occupation,Garbage collection     2011-12-16 10:06:04

  Stop Making Apps

There are a bunch of iPhone apps I own though I have no clue what they do. These apps include but aren’t limited to; FLUD, Apptitude, Cartoonatic, Can’t Wait!, Punch, Pah, Prize Claw, Traveler, Concur, Jajah, Fast Customer, Pimple Popper and many more whose names I can’t even remember.Occupying my valuable homescreen real estate are also a bunch of apps whose purpose I remember only because they were built by people I know or am friends with, but that I sadly never use. And ...

   App,Apple,Android,Stop     2011-11-12 10:54:42

  Bash Shell Scripting - 10 Seconds Guide

This Bash shell scripting guide is not a detailed study but a quick reference to the BASH syntax. So lets begin... Common environment variables PATH - Sets the search path for any executable command. Similar to the PATH variable in MSDOS. HOME - Home directory of the user. MAIL - Contains the path to the location where mail addressed to the user is stored. IFS - Contains a string of characters which are used as word seperators in the command line. The string normally consists of the spac...

   Bash,Shell,Linux,Tutorial,10 seconds,Shortcut key     2012-02-28 08:05:41

  What Happens When Apps Go On Sale?: Revenue Up 22% On iPhone, 29% On Android

In a new research report from Distimo, the app store analytics provider examined two different ways that allow mobile developers to get a bump in both their download numbers and revenue. One way, which is within the developers’ control, is putting the app on sale. Within the first day, iPhone developers see an average increase of 41% in revenue using this method, and see revenue increases of 22% by the sale’s end. Android apps, however, rose just 7% on day one, but closed ou...

   Mobile apps,Sale,Revenue,Android and Apple     2012-01-28 07:19:28

  Is Singapore a good place for startups?

Singapore is long time being considered as a perfect place for living and investing given its beautiful environment, warmly climate,  well-polished legal system and well-known richness. Its government is relatively young and open-minded. They like to take new challenges and embrace new technologies. It's the first country to open its government data to the world online. Many of you may consider that Singapore would be a perfect place for you to start your next startup. But the tr...

   SINGAPORE,STARTUP     2016-03-09 09:06:32

  Linux Clock : CST,UTC and NTP setup

1. There is an option when you set up clock on installing Linux: system clock users UTC, so what does UTC mean? It's Universal Time Coordinated(UTC), there are two different times in GPS system: one is UTC , the other one is LT(Local Time). The difference between these two is just the timezone difference, UTC is the time in timezone 0. If the local time in Beijing is 8 o'clock in the morning, then UTC time is 0 o'clock, which is a 8 hour difference. 2. In Linux, when we use date to check the tim...

   Linux,Clock,UTC     2013-03-21 12:19:30

  10 Easy Things to Do to Enhance Your Online Security Today

If you think you don’t need to take extra steps to increase your cyber security, you are wrong. Statistics on cybercrime are shocking and clearly prove that you can’t have ‘too much security’ while using the Internet today. For example, did you know that by 2023 cybercriminals will have stolen over 33 billion private records or that 15 million Americans became victims of digital identity theft in 2017 (Norton)? That’s not even mentioning millions of monetary losses ...

   DATA SECURITY,SECUIRITY     2019-01-21 07:01:37