Tuesday, August 5, 2008

Cybercrime of Web 2.0

We have entered the era of Web 2.0. It is a world of intensive and extensive horizontal communication with much increased free flow of information. With the freedom, there comes increased risks in a more chaotic jungle of information. CNN recently reported on the modern trend of cybercrime which is taking advantage of Web 2.0. It is useful to know the danger around so that we can keep a close guard. If you are interested, please take a look at the article Fighting the Cybercrime Lords of Web 2.0.

Web 2.0 is mainly about mobile computing and social networking, coupled with easy website services such as blogs and social network sites. The emphasis of the web world has shifted from technological to content-oriented. The power of information flow has devolved from organizations and content providers to individuals who can create, share, obtain any information they want, including much personal information. Online communities continue to grow at a great speed through friendly social networking sites, and cybercrime syndicates continue to target these online relationships based on sharing and trust.

In the old days, cybercrime was committed by hackers who were mostly whiz kids with an attitude. They broke in the systems of organizations for fun and pride. The destructions caused were denial of service, defacing of corporate images and corruption of data. Nowadays, cybercrime is more organized and targeting on financial gains through phishing, stolen personal data, bank account and credit account data.

The cybercrime world has developed an ecosystem of its own, with services for hire. Its infrastructure includes botnets which are robotic networks of compromised or specific virus infected computers. The bot-herders of the botnets offer time and services to executive brokers and supply them with stolen data obtained by spammers and phishers. Cyber criminals may hire programmers to write malware and hackers to break into sites in order to steal email addresses and other identities. With strong social engineering techniques, many password-protected accounts can be cracked. To target the individuals, many counterfeited hooks in the form of email and websites are written in perfect languages supported by common brand logos and attractive styles. Stolen data are valuable. While credit card data can sell for only $5 to $10, sensitive data can bring in massive amounts.

Cybercrime is difficult to eradicate. Many malware advertising scammers pay irresponsible websites to serve their malicious advertisements. Hackers and spammers may hire criminal or irresponsible ISPs to host their malevolent servers and traffic. Many ISPs are not cooperative with law enforcement agencies when it comes down to disclosing the identities of their clients. Some ISPs are hosted in countries with different jurisdictions and unfriendly diplomatic contact.

In the mean time, the technical arms race between cyber-criminals and security professionals has escalated. With ever improving methodology and a consolidated effort on unified threat management, malicious e-mail should never make it to your inbox. Most of them are filtered out effectively by your ISPs. The security professionals connect honeypot computers to the Internet. These are unpatched computers subject to all kinds of cyber attacks. They are baits attracting all cyber criminal activities in real time and sending out alerts. Such weather forecast enables security professionals to prepare for attacks underway.

Same as other kinds of crime, cybercrime has become a common place problem. The encouraging message is that there is good coordination between the researchers, the security industry and other authorities working together to combat the criminals. The anti-crime effort goes all the way down to the individual. It is essential for us to be aware of what is out there.

Friday, August 1, 2008

感醫生健康忠告

阿感醫生既健康忠告在網上流轉,不過只有英文。我將之翻譯成中文,使大家都看得明白。阿感醫生既忠告看似淺白,其實意義深遠,和做人態度有關,有禪的意味;請多加思考,自行判斷,後果自負。

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感覺良好醫生健康忠告

無 (無知市民問)
感 (感覺良好醫生答)

無:我聽聞強心運動可以延長壽命,是否真確呢?
感:你的心臟一生中只能跳這麼多次,所以不要將它浪費在運動上。一切物體最終都會磨損,所以加快心跳不會延長壽命,正如經常開快車不會延長汽車的壽命。想要延長壽命,應該休息一下。

無:我應否食少些肉而多食蔬果?
感:用邏輯思考一下。牛食什麼呢?是乾草和玉米;這些都是蔬菜。所以食牛肉是一個極有效率的機制將蔬菜轉化被身體吸收。需要穀物?食雞肉啦。牛肉亦是綠色有葉蔬菜來源,因為牛食綠草。同時一件豬扒亦可供應你每日所需的蔬菜分量。

無:我是否需要減低飲用酒精飲品?
感:無需要。因為餐酒是由水果製造。白蘭地是蒸餾過的餐酒,將水果成份裡的多餘水份減低使之更佳。啤酒亦是由穀物製造。飲勝!

無:怎樣計算身體脂肪比例?
感:你有一個身體你又有脂肪,比例就是一比一。如果你有兩個身體,比例就會是二比一。

無:參加定時的運動計劃有什麼好處?
感:想不到有什麼好處。沒有痛苦的就是最好。

無:油炸食物是否對身體不好?
感:你是否有聽書?現時油炸食物都是用植物油來炸;油炸食物充滿植物油;食多點植物怎會不好。

無:做彎腰起坐是否會減中圍?
感:不會。如果你運動一條肌肉,它會長大。如果你想腰圍加大就要做彎腰起坐。

無:食朱古力是否不好?
感:有無搞錯。朱古力是可可豆,是一種蔬菜。它是使人感覺良好的最佳食物。

無:游泳是否對體型有好處?
感:如果游泳對體型有好處,點解鯨魚會係咁樣?

無:有體型是否對生活方式很重要?
感:圓形亦是體型之一。

感:希望這些答案可以澄清大眾對食物和節食的錯誤概念。要記住:生命這一個前往墳墓的旅程並不需要你到達終點時還有強健美好的體魄,而應該是左手有酒,右手有朱古力,抵達終點時剛好用完了你的身體,然後可以說這一個生命過得真好。

感:最後,注意健康飲食的人請留意以下各營養研究的矛盾結論:
一,日本人少吃肉而比美國人少患心臟病。
二,墨西哥人多吃肉而比美國人少患心臟病。
三,中國人少飲紅酒而比美國人少患心臟病。
四,意大利人多飲紅酒而比美國人少患心臟病。
五,德國人多飲啤酒又多吃肥美香腸而比美國人少患心臟病。

感:結論是:鍾意食就食,鍾意飲就飲,講得野多都可能會致命。
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