Computer and Information Security

TC2027 Work with Ken is a complete different way to learn, it challenge your self to improve and to learn exploring the world/internet in a DIY way. I really enjoyed taking the course with him because it was a easy way to learn and to complete the course not to get a good grade but to get the knowledge expect to receive on this course. Course objective: Upon completion of this course, students will have gained an overview of the area of computer security and the basic knowledge needed to understand the risks, threats and vulnerabilities of computer systems in today's world, as well as the controls and protection methods against possible attacks, which are indispensable for these systems to work properly in contemporary companies. They will also be familiar with the existing national and international laws related to computer system security. Yes, for me the course objective was accomplished, and I strongly recommend to take any possible course with Ken, not only because h...

Dentro de los principales sistemas operativos MacOS es de los más importantes, el día de ayer se descubrió una vulnerabilidad que permitía que un usuario invitado tuviera privilegios de administrador con un simple cambio en el nombre del usuario y varios enters, Pueden ver el descubrimiento original aquí Lo más interesante de esto es que 19 horas más tarde Apple ya tenia disponible en su centro de descargas una actualización al sistema operativo que solucionaba el problema. No existe sistema perfecto pero la velocidad de reacción y el compromiso de los creadores a mantenerlo seguro, confiable y funcional es lo que hace que sus usuarios permanezcan ahí.

Cryptography has been here since we are, we have to remember that to break a cryptography system was the objective of the first computers but also that cryptography and security are always related on iT or other for example: Every poker player should learn a bit about cryptography. Because, in a way, playing poker is actually a form of cryptography. Let me explain. Cryptography is the science of encoding information. Typically encryption is used to encode communications between two parties so that a third party is unable to understand it. For millennia, people have been trying to encrypt their communications—and the field of cryptography has become increasingly important over the years. All of the innovation in cryptography is designed to address one problem. There is an inherent tradeoff between ease-of-use of a cryptographic method and its security. Interestingly, if you are interested only in security—making sure that no one can possibly break your code—and not at all in ea...

On this post I want to share some work I did on my company related with this topic and with collaboration with ESET.  

Easy the users and admins are humans and humans made mistakes  There were many times that because a mistake made by a human the system fail an thats a real issue when for example that human works at AWS and unintentionally breaks the internet of half of USA. It’s human to make errors but thankfully these errors can be 100% prevented. A mixture of strategies may help to prevent human errors from turning into security incidents. When looking at attacks today, most people think external attacks are the biggest problem for organizations and where they need to focus most of their energy. However, it is important to distinguish between the source of an attack and the cause of damage. While the source of most attacks is absolutely external, the cause of damage is often the accidental insider. Adversaries recognize that it is too hard to directly break into servers and compromise an organization externally. It is much easier to target an insider, trick that person into opening an...

Physicians, attorneys and other professionals whose job duties affect others' lives usually receive, as part of their formal training, courses that address ethical issues common to their professions. IT security personnel often have access to confidential data and knowledge about individuals' and companies' networks and systems that give them a great deal of power. That power can be abused, either deliberately or inadvertently. But there are no standardized training requirements for hanging out your shingle as an IT security consultant or in-house security specialist. Associations and organizations for IT pros are beginning to address the ethical side of the job, but again, there is no requirement for IT security personnel to belong to those organizations. Why are ethical guidelines needed? The education and training of IT professionals, including security specialists, usually focuses on technical knowledge and skills. You learn how to perform tasks, but with little ...