SEARCH KEYWORD -- Memory management

  Android Security

Android is an open source mobile platform that includes an operating system, middleware and applications. Android has revolutionized the mobile world in a big way. Android, which started as an alternative to Apple’s iOS, is now slowly eating into the market share of Apple and is of primary concern to the company. Let’s have a brief introduction about android and then look into the security concerns and vulnerabilities that need to be focused on. Android Introduction: Android was deve...

   Android security,Input validation     2013-04-16 12:19:37

  Programming language choices for an IT manager

A TechRepublic reader named Aaron emailed me and posed excellent questions; here’s an excerpt from his email:“I manage a small IT department and all my skills are self-taught. At times I struggle with complex business initiatives and I believe if I had some programming skills I would be more adept at handling the initiatives. Can you recommend a programming language? Is formal education the best path or have you found that programming can be self-taught?”I’m sure a lot ...

   IT Manager,Programming,Skills,Programming knowledge     2011-10-21 08:37:10

  Kubernetes Authentication & Authorization 101

If we want to build a system with user modules, Authentication and Authorization are something that we can never ignore, though they could be fuzzy to understand. Authentication (from Greek: αὐθεντικÏŒς authentikos, “real, genuine”, from αὐθέντης authentes, “author”) is the act of proving an assertion, such as the identity of a computer s...

   RBAC,AUTHORIZATION,AUTHENTICATION,KUBERNETES     2021-06-05 23:19:18

  Python Process Protection Watchdog

Project Design Purpose: During participating the cyber exercise as red team member, we found that the injected malware or attack launching program can easy be stopped by the blue team or defense program / mechanisms via killing the process / deleting the file. To address this, our project aims to develop a robust watchdog program designed to bind to target programs, diligently monitor their execution states, and ensure uninterrupted functionality. Continuous Monitoring: Establish a vigilant wa...

       2024-09-14 11:09:14

  Python FTP Server and Client

Distributed Log File Automated Archive System This week, we will introduce the automated compute cluster nodes' log automated archive system project and FTP Communication utility library module. Program Design Purpose: This project aims to create an FTP server & client lib program for file transfer and a files management system for log data synchronization. We will develop an automated log file archive system that regularly collects newly generated log files from multiple nodes in a compute...

       2024-09-29 04:07:50

  Is Java Set ordered or not?

“Is Java Set ordered or not? ” is the most popular question asked when you interview for a Java Developer position. Many fail to answer it, and I have to admit I was one of the many. I have known the answer is “Yes and No” for a long time. No. HashSet is not ordered. Yes.TreeSet is ordered. If the interviewer continues with some follow up questions, I’m not confident that I know the answer then. Why is TreeSet ordered? Are there any other ordered S...

   ORDER,SORTEDSET,HASHSET,JAVA     2021-02-11 06:55:00

  Investment Banking in China — What I’ve Learned & Unlearned

Anyone seeking to succeed in investment banking in China should live by one rule alone: it’s not who you know, but how well you know them. In China, more than any other country where I’ve worked, the professional is also the personal. Comradeship, if not friendship, is always a necessary precondition to doing business together. If you haven’t shared a meal – and more importantly, shared a few hundred laughs – you will never share a business deal. Competence, ex...

   Business,China,Relationship,Cooperation,Advice     2011-11-18 09:13:49

  Speed Hashing

A given hash uniquely represents a file, or any arbitrary collection of data. At least in theory. This is a 128-bit MD5 hash you're looking at above, so it can represent at most 2128 unique items, or 340 trillion trillion trillion. In reality the usable space is substantially less; you can start seeing significant collisions once you've filled half the space, but half of an impossibly large number is still impossibly large. Back in 2005, I wondered about the difference between a checksum and...

   Speed hashing,Security,MD5     2012-04-07 10:35:15

  HP To Apple: You Win.

As I write this, I’m sitting in a cafe. Around me, there are five people on laptops — four of them are MacBooks. Four other people are using tablets — all four are iPads. Welcome to the Post-PC world. That phrase was one of the first things that jumped to my mind today when I heard the news that HP was not only killing off their TouchPad and Pre webOS-based products, but also trying to spin-off their PC business. The largest PC busine...

   HP,Apple,Palm,Competition,webOs     2011-08-19 07:38:41

  Understand GoLang WaitGroup internals and how it works

Background Before getting into the main content, let me give a brief introduction to WaitGroup and its related background knowledge. Here, the focus is on the basic usage of WaitGroup and the fundamental knowledge of system semaphores. For those who are familiar with these, you can skip this section directly. WaitGroup WaitGroup is one of the most common concurrency control techniques in Golang, and its function can be roughly compared to the join() in concurrency control of other languages' mul...

   GOLANG,WAITGROUP,SOURCE CODE     2023-04-26 08:02:01

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