Computer Security Tips

By: Supreme Computers on 5:23 AM

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WHAT IS SECURITY? 

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Absolute security does not exist, security is always related to who your adversaries might be. Security is therefore about informing yourself and assessing the possible risks you, and others you communicate with, are facing. Make sure you reserve some time to choose the right tools, install everything properly, and test if it works. Compare it with driving a car: it takes a little bit of practice, and some judgement on others' behaviour, but as soon you are in control it can safely get you where you want. To make a choice between the types of tools you need, it helps to make a distinction between two basic types of 'threats': undirected threats and directed threats. Most of the threats we are facing are automated undirected threats and luckily these are also the easiest to defend against. Unfortunately, we are sometimes also subjected to directed threats, for which we need some extra safety measures. We will shortly go into these issues and refer to the appropriate chapters so you can start your way.

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UNDIRECTED AND DIRECTED THREATS Undirected threats are threats that are not directed at you personally, but might still affect you. Examples include phishing emails and computer virus infections. These methods are always automated and are just looking to get new victims, that can be everyone. Some schemes can evolve into a directed threat (for example when responding to e-mails telling you you won the "Spanish online lottery"). Also unprotected websites, or networks, can be dangerous if you fill in your login codes or credit card information. These threats can be compared to walking around in an unknown city, ending up in the wrong neighborhood and getting mugged. This book aims to be your city guide helping to prevent you to be at the wrong place at the wrong time. To protect yourself from this type of threats we recommend you to read at least the sections on General Computer Security, Secure E-mailing and Secure Browsing. Next to that it is key to keep your wits about you, keep your eyes and ears open and don't loose your common sense. 5 Directed threats are the most dangerous ones. A long known wisdom amongst security specialists is the notion that "Only amateurs attack machines, professionals attack people." Directed threats are aimed at you personally or your organization and might involve a lot of different techniques. Attackers will use a mix of social engineering, sophisticated tools, luck and hard work. Directed attacks are a lot more expensive to undertake than undirected ones, as mostly they require more skills and work hours. One source for directed attacks can be people you know, for example co-workers, your boss, your spouse or friends. They might do so out of curiosity or for worse purposes. Small measurements might be enough to counter these attacks, like using a password on your computer and locking your screen when leaving your computer unattended. Also thieves that gained access to your bank account, for example through phishing or spying on unprotected networks, are considered a serious threat to the internet user. Another source of directed threats are (repressive) societies. Governments have a range of motivations for monitoring or restricting different kinds of people's online activity. 

WHO MIGHT NEED THIS MANUAL? 

Of course, there are several reasons why you might need some guidance for internet security. Who are possible users that can have personal or professional reasons to take extra safety measures. Journalists probably face directed threats. Organized crime, corruption, and government brutality are dangerous subjects to cover. You may need to protect yourself and your sources of information. Bloggers can encounter similar problems. You may want to write about everyday life, but issues are silenced or unpopular because of ethnicity or gender. You might prefer anonymity or need it to connect with a support group. Diplomats are also under heavy surveillance, as we know from the Wikileaks affair. You'd rather communicate in a safe way with your colleagues because the the content of your e-mails could have damaging effects. Activists may want to improve your government or are seeking a new one. You may want to expose environmental issues, labor abuses, fraud, or corruption at your place of work. Your government and employers are not going to be happy about this no matter the time of year, but they may put more effort into monitoring you if they suspect that there will be protests in the streets soon. Internet users: You might want to increase your security while browsing or mailing so you are better defended against undirected attack, or you might be just fed up with companies storing all your data for financial purposes, or suggesting you all sorts of things about yourself and your friends. 

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