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7 ways hackers can use Wi-Fi against you
================================================================================
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/intro_title-100626673-orig.jpg)
### 7 ways hackers can use Wi-Fi against you ###
Wi-Fi — oh so convenient, yet oh so dangerous. Here are seven ways you could be giving away your identity through a Wi-Fi connection and what to do instead.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/1_free-hotspots-100626674-orig.jpg)
### Using free hotspots ###
They seem to be everywhere, and their numbers are expected to [quadruple over the next four years][1]. But many of them are untrustworthy, created just so your login credentials, to email or even more sensitive accounts, can be picked up by hackers using “sniffers” — software that captures any information you submit over the connection. The best defense against sniffing hackers is to use a VPN (virtual private network). A VPN keeps your private data protected because it encrypts what you input.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/2_online-banking-100626675-orig.jpg)
### Banking online ###
You might think that no one needs to be warned against banking online using free Wi-Fi, but cybersecurity firm Kaspersky Lab says that [more than 100 banks worldwide have lost $900 million][2] from cyberhacking, so it would seem that a lot of people are doing it. If you want to use the free Wi-Fi in a coffee shop because you’re confident it will be legitimate, confirm the exact network name with the barista. It’s pretty easy for [someone else in the shop with a router to set up an open connection][3] with a name that seems like it would be the name of the shop’s Wi-Fi.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/3_keeping-wifi-on-100626676-orig.jpg)
### Keeping Wi-Fi on all the time ###
When your phone’s Wi-Fi is automatically enabled, you can be connected to an unsecure network without even realizing it. Use your phone’s [location-based Wi-Fi feature][4], if it’s available. It will turn off your Wi-Fi when you’re away from your saved networks and will turn back on when you’re within range.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/4_not-using-firewall-100626677-orig.jpg)
### Not using a firewall ###
A firewall is your first line of defense against malicious intruders. It’s meant to let good traffic through your computer on a network and keep hackers and malware out. You should turn it off only when your antivirus software has its own firewall.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/5_browsing-unencrypted-sites-100626678-orig.jpg)
### Browsing unencrypted websites ###
Sad to say, [55% of the Web’s top 1 million sites don’t offer encryption][5]. An unencrypted website allows all data transmissions to be viewed by the prying eyes of hackers. Your browser will indicate when a site is secure (you’ll see a gray padlock with Mozilla Firefox, for example, and a green lock icon with Chrome). But even a secure website can’t protect you from sidejackers, who can steal the cookies from a website you visited, whether it’s a valid site or not, through a public network.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/6_updating-security-software-100626679-orig.jpg)
### Not updating your security software ###
If you want to ensure that your own network is well protected, upgrade the firmware of your router. All you have to do is go to your router’s administration page to check. Normally, you can download the newest firmware right from the manufacturer’s site.
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/7_securing-home-wifi-100626680-orig.jpg)
### Not securing your home Wi-Fi ###
Needless to say, it is important to set up a password that is not too easy to guess, and change your connection’s default name. You can also filter your MAC address so your router will recognize only certain devices.
**Josh Althuser** is an open software advocate, Web architect and tech entrepreneur. Over the past 12 years, he has spent most of his time advocating for open-source software and managing teams and projects, as well as providing enterprise-level consultancy for Web applications and helping bring their products to the market. You may connect with him on [Twitter][6].
--------------------------------------------------------------------------------
via: http://www.networkworld.com/article/3003170/mobile-security/7-ways-hackers-can-use-wi-fi-against-you.html
作者：[Josh Althuser][a]
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]:https://twitter.com/JoshAlthuser
[1]:http://www.pcworld.com/article/243464/number_of_wifi_hotspots_to_quadruple_by_2015_says_study.html
[2]:http://www.nytimes.com/2015/02/15/world/bank-hackers-steal-millions-via-malware.html?hp&action=click&pgtype=Homepage&module=first-column-region%C2%AEion=top-news&WT.nav=top-news&_r=3
[3]:http://news.yahoo.com/blogs/upgrade-your-life/banking-online-not-hacked-182159934.html
[4]:http://pocketnow.com/2014/10/15/should-you-leave-your-smartphones-wifi-on-or-turn-it-off
[5]:http://www.cnet.com/news/chrome-becoming-tool-in-googles-push-for-encrypted-web/
[6]:https://twitter.com/JoshAlthuser

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黑客利用Wi-Fi侵犯你隐私的七种方法
================================================================================
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/intro_title-100626673-orig.jpg)
### 黑客利用Wi-Fi侵犯你隐私的七种方法 ###
Wi-Fi — 既然方便又危险的东西！这里给大家介绍一下通过Wi-Fi连接泄露身份信息的七种方法和预防措施。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/1_free-hotspots-100626674-orig.jpg)
### 利用免费热点 ###
它们似乎无处不在，而且它们的数量会在[下一个四年里增加四倍][1]。但是它们当中很多都是不值得信任的，从你的登录凭证、email甚至更加敏感的账户，都能被黑客用一款名叫“sniffers”的软件截获 — 这款软件能截获到任何你通过该连接提交的信息。防止被黑客盯上的最好办法就是使用VPN(virtual private network)，它能保护你的数据隐私它会加密你所输入的信息。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/2_online-banking-100626675-orig.jpg)
### 网上银行 ###
你可能认为没有人需要自己被提醒不要使用免费Wi-Fi来操作网上银行, 但网络安全厂商卡巴斯基实验室表示[全球超过100家银行因为网络黑客而损失9亿美元][2]，由此可见还是有很多人因此受害。如果你真的想要在一家咖吧里使用免费真实的Wi-Fi，那么你应该向服务员确认网络名称。[在店里用路由器设置一个开放的无线连接][3]并将它的网络名称设置成店名是一件相当简单的事。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/3_keeping-wifi-on-100626676-orig.jpg)
### 始终开着Wi-Fi开关 ###
如果你手机的Wi-Fi开关一直开着的，你会自动被连接到一个不安全的网络中去，你甚至都没有意识到。你可以利用你手机的[基于位置的Wi-Fi功能][4]，如果它是可用的，那它会在你离开你所保存的网络范围后自动关闭你的Wi-Fi开关并在你回去之后再次开启。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/4_not-using-firewall-100626677-orig.jpg)
### 不使用防火墙 ###
防火墙是你的第一道抵御恶意入侵的防线，它能有效地让你的电脑网络通畅并阻挡黑客和恶意软件。你应该时刻开启它除非你的杀毒软件有它自己的防火墙。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/5_browsing-unencrypted-sites-100626678-orig.jpg)
### 浏览非加密网页 ###
说起来很难过，[世界上排名前100万个网站中55%是不加密的][5]，一个未加密的网站则会让传输的数据暴露在黑客的眼下。如果一个网页是安全的，你的浏览器则会有标明(比如说火狐浏览器是一把绿色的挂锁、Chrome蓝旗则是个绿色的图标)。但是一个安全的网站不能让你免于被劫持的风险，它能通过公共网络从你访问过的网站上窃取cookies，无论是不是正当网站与否。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/6_updating-security-software-100626679-orig.jpg)
### 不更新你的安全防护软件 ###
如果你想要确保你自己的网络是受保护的，就更新的路由器固件。你要做的就是进入你的路由器管理页面去检查，通常你能在厂商的官方网页上下载到最新的固件版本。
![Image courtesy Thinkstock](http://core0.staticworld.net/images/article/2015/11/7_securing-home-wifi-100626680-orig.jpg)
### 不保护你的家用Wi-Fi ###
不用说，设置一个复杂的密码和更改无线连接的默认名都是非常重要的。你还可以过滤你的MAC地址来让你的路由器只承认那些确认过的设备。
**Josh Althuser**是一个开源支持者、网络架构师和科技企业家。在过去12年里，他花了很多时间去倡导使用开源软件来管理团队和项目，同时为网络应用程序提供企业级咨询并帮助它们走向市场。你可以联系[他的推特][6].
--------------------------------------------------------------------------------
via: http://www.networkworld.com/article/3003170/mobile-security/7-ways-hackers-can-use-wi-fi-against-you.html
作者：[Josh Althuser][a]
译者：[ZTinoZ](https://github.com/ZTinoZ)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]:https://twitter.com/JoshAlthuser
[1]:http://www.pcworld.com/article/243464/number_of_wifi_hotspots_to_quadruple_by_2015_says_study.html
[2]:http://www.nytimes.com/2015/02/15/world/bank-hackers-steal-millions-via-malware.html?hp&action=click&pgtype=Homepage&module=first-column-region%C2%AEion=top-news&WT.nav=top-news&_r=3
[3]:http://news.yahoo.com/blogs/upgrade-your-life/banking-online-not-hacked-182159934.html
[4]:http://pocketnow.com/2014/10/15/should-you-leave-your-smartphones-wifi-on-or-turn-it-off
[5]:http://www.cnet.com/news/chrome-becoming-tool-in-googles-push-for-encrypted-web/
[6]:https://twitter.com/JoshAlthuser