Public Wi-Fi

Leave a comment

My local police department issued this warning today:

Today’s technology can be extremely useful in our everyday activities, but also dangerous if not done so with caution. Below are some things to remember before you allow you your smart phone, tablet, lap top, or any other device to connect to a publicly shared Wi-Fi network.

  1. Never utilize your online bank or credit card accounts, or shop online when connected to public Wi-Fi.
  2. Be aware that criminals may set up similar network names to a restaurant, café or coffee shop to get you to us their network. When this is done, they can gain access to your personal information.
  3. Make sure your smart phone is not set up to automatically connect to surrounding Wi-Fi networks.

You might ask the difference between public Wi-Fi and the one in your home.  Well, the simple answer is encryption.  Everything you send via a public Wi-Fi signal can be intercepted by someone else on that same network.  Since the transmission is not encrypted that person can read everything you send.  That includes passwords, bank numbers and private emails.

Encryption acts similarly to the locks on the doors in your home.  The locks keep people out unless they have the right key to translate the tumbler in the door.  Similarly, encryption locks your message so that someone without the proper decryption codes cannot understand what you have sent.  No locks mean that anyone can walk into your home;  no encryption means that everyone can read your post. The better the locks, the less likely that undesirable people will come in your home;  the better the encryption, the less undesirable people can read your email.

Do you need help using the Internet?

Leave a comment

coverI have a new book and it may just be the thing you have been looking for!  The name of the book is You’re Never Too Old to Surf:  A Senior’s Guide to Safe Internet Use. 

This book is for you if you have ever wanted to harness the power of the Internet, but haven’t been quite sure what that means or how to do it.  It is intended for the parents, grandparents and great-grandparents who want to use the wide range of tools that are available today on the Internet, from simply surfing the web to buying online, using email, blogs and even social networking sites.  You may have sought guidance from your child or children  only to be annoyed at their exasperated response to your questions.  Or, you may have tried it on your own, and gotten frustrated with the tools, or had some problem result from that use (or know someone who did).  You may be using the Internet, but just not feel very confident in what you are doing.  If you fall into any of those categories, I wrote this book for YOU!  Of course, if you are the child or grandchild and are having trouble explaining things to your elders, this book could help you too.

The book is available from Amazon.com and BarnesandNoble.com.  Your local bookstore can order it too.  It is published through CreateSpace, ISBN 978-1506163857.

Please give it a try and let me know how you like it.

 

Senate Bill 2105: Cybersecurity Act of 2012

Leave a comment

On Valentine’s Day, four Senators introduced Senate Bill 2105, which is also known as the Cybersecurity Act of 2012.  If you would like to read the bill as it was introduced, it is available in full as presented.   If passed, this law would authorize the Federal government to regulate the security of privately owned critical infrastructure, much of which is controlled by Internet-connected systems and susceptible to being hacked.  This includes electrical power grids, telecommunications networks, air traffic control systems, dams, and nuclear power plants.  Said differently, this would allow the Federal government to have security standards, to assess a company’s compliance, and to levy fines if the security is not sufficiently high.

Last week, the Wall Street Journal reported that a group of Senators have weakened the bipartisan legislation.   They responded to business lobbyists who claimed that such regulations would “regulations would create a costly and cumbersome process.”  Rather than requiring the companies to meet these regulations, they should be encouraged to do so.  According to Senator John McCain, “Instead, we must leverage the ingenuity and innovation of the private sector in partnership with the most effective elements of the federal government to address this emerging threat.”

I am perplexed as to why Senator McCain, who has a strong record on National Security, would take this stand …. unless he does not really understand the real and present threat of such an attack.  Consider the number of companies in the last few months that have reported a security breach.  Sometimes the breach provides thieves with passwords, which can be problematic enough, but sometimes instead it is social security numbers, bank accounts and more personal information.  The people whose identities are stolen have a never ending hassle to fix the problem.  Many companies do not take security as seriously as they should.  Even when security is a priority, the companies have a significant task keeping a step ahead of the hackers.

Now, take that up to a regional or national level.  Suppose the U.S. had no access to electricity or telecommunications equipment.  Suppose this is not for a couple of hours as you might get in a thunderstorm, but rather for an extended period of time.   What would that do to the company’s productivity?  What if it happened during peak holiday shopping and no one could buy gifts or food?  What if it happened on election day and half the people were not able to vote?  What if …. there are many horrible examples.

We have already proven this can happen.  Well, it is unclear whether “we” proved it or someone else proved it by the introduction of the Stuxnet virus into Iran’s nuclear reactor.  Not only did it stop operations, but it did it in a way to damage the plant and roll back their development.  Other similar viruses, aimed at the “Internet of Things” (such as a power plant) have also been identified.

People release viruses all the time — sometimes without even knowing the impact of what they have done.   Why do we believe it won’t happen here?  Personally I think it is because people just do not understand technology and what security breaches can do.   They understand bombs or people shooting guns and know how to respond.  But electrons?  It is easy to listen to those claiming to be experts and follow their advice.

I hope we get the legislation.  I hope that it is flexible enough to be able to adapt to the rapid changes in technology.  I hope we can find a way to protect ourselves before it is too late.  If you agree, please share your concern with your Senators and Representatives.

 

A postnote:  Even weakened, the bill failed.  Too many people thought telling infrastructure companies that they need to be secure was a problem.  Sigh.

Malware — DNS Change

1 Comment

You may have heard the reports that something called DNSChanger is expected to hit on July 9, but not known what it was or what to do.

First, what is a “DNS” and why do you care if it gets changed?  First, DNS stands for Domain Name System and it is the directory system that allows computers to locate one another.  Your computer has no understanding of a web address such as  https://internetuseforseniors.wordpress.com.  So, after you type that into your web browser, the computer goes to the DNS and asks for the URL to be translated into something it understands.  That something is called an IP address.  Like your home address, an IP address is made up on multiple parts.  Your home address has a street number, a street, a city, state, country (perhaps) and some code, such as a zipcode.  Similarly, the IP address has a series of components that identify a specific computer uniquely.  These addresses are of the form 134.124.25.18, where the first number indicates your domain and the last number identifies a specific computer in the domain;  the intermediary numbers are further demarcations of the location.

Without a DNS server, we would all need to type in the specific IP address.  Clearly that is not practical. So, if the malware has infected your computer, then on Monday you will no longer be able to type in a URL and have your computer understand how to direct the browser.

How did that malware get put on people’s machines?  Like most malware, it infected people’s machines when they clicked on some advertising link that downloaded software to computers without the user knowing about it.  Since the software was not causing any problems, people do not know that it is on their machine — until July 9.  (Of course, with regular malware checks, this would probably have been detected.)

To avoid a problem, check your system now.  Some services, such as Comcast, has notified the users whose machines seem to be infected.  Similarly, Google and Facebook may be posting a warning if they detect your computer is infected.  To check, go to http://www.dcwg.org and follow the directions for checking and repairing your machine if necessary.  Do it today so you don’t have a problem on Monday!

What are Flame and Stux-net and why should I care?

1 Comment

There has been much discussion in the popular press of late about something called Flame and something called Stux-net, especially with regard to national security. However, many people do not understand what they are and why they are so troubling. Basically both of these are “computer worms” which, like viruses, attempt to perform malicious acts to your computer. The difference between a “worm” and a “virus” really has to do with how they are propagated. Computer viruses are a type of malware that generally deletes or changes files. They must be permitted to execute code and write to memory, and so generally attach themselves to some program; when the user runs the program, he or she also runs the virus (unintentionally). A worm, on the other hand, can self-replicate and move through a network (like the Internet). Generally worms are designed not only to spread, but also to make specific changes to the computer, including taking control of all or part of the computer. The key to understand is that the worm can cause damage to the system.

First, let’s talk about Stux-net. You may have heard about this one in 2010 when it was reported that there had been a cyberattack on Iranian uranium-enrichment centrifuges. This worm had been introduced into the Iranian nuclear processing facility (people in the know think it was introduced on a thumb drive), and it took control of the control system. A control system manages and regulates the machinery under its control, so that humans (often quite far away) can read sensors and information about they system and make adjustments. In this case, facility being monitored was Iran’s nuclear processing facility. The control system sent messages to uranium-enriching centrifuges to spin at speeds well beyond their tolerances. Obviously then the centrifuges were damaged.

You might ask how the worm could have caused that problem. Well, the programmers of the worm found vulnerabilities in the computer programs that run the control system. It is the same process of programmers exploiting bad programming the operating system so our computers can get viruses.

The worm caused so much damage to the facility that it has set back the nuclear program in Iran. At the time, there was discussion at the time that it might have originated in the United States and Israel, but there was no evidence to back up that claim.

It is beyond the scope of this blog to discuss who was behind it and their motives. However, it is important to note that malware can get into a physical facility, such as power plants, water treatment facilities and other public utilities. These are things we have taken for granted as protected and safe. However, The Washington Post, reported that:

A recent examination of major control systems by six hacker-researchers working with the security firm Digital Bond found that six of seven devices in the study were riddled with hardware and software flaws. Some included back doors that enabled the hackers to download passwords or sidestep security completely.

In fact, according to The Washington Post,

Uncounted numbers of industrial control computers, the systems that automate such things as water plants and power grids, were linked in, and in some cases they were wide open to exploitation by even moderately talented hackers.

Further, they note,

A researcher at Cambridge University, Eireann Leverett, used Shodan to identify more than 10,000 control computers linked to the Internet, many of them with known vulnerabilities. Leverett concluded that many operators had no idea how exposed they were — or even realized that their machines were online.

Last week the press identified a new worm deployed in Iran called Flame. This seems to be primarily surveillance malware that allows someone to turn on microphones, look at data, track what people are doing on a computer, and perhaps even listen to nearby cell phone conversations. This worm was deployed to the Iranian oil industry and was attaching itself to control systems for the rigs and other equipment. It was detected and the Iranian government has unplugged those facilities from accessing the Internet. It has also created its own task force to combat these attacks and claims it intends to build its own Internet. This same worm has been found in the Palestinian territories, Sudan, Syria, Lebanon, Saudi Arabia and Egypt.

While the worms seem different, experts are not sure. They both move in the same fashion. In addition, computer experts say that the style of programming is similar between the two. Yes, it is true that there are styles of programming just as there are styles of writing. An expert can tell the reasons Emily Dickenson works are not confused with those of James Joyce. A computer expert can tell similarities in programming by how things are named, how they flow, and how different parts of the programs are hooked together. Worse yet, these experts claim to have found code that was apparently taken directly from Stux-net and put in Flame. All of those suggest similar authors.

What is the take-away for us? All of this mischief has put a spotlight on the fact that we, as a society, depend on computers for much beyond the business and pleasure applications we generally discuss. Everything from the car you drive to the utilities use computers to control them. And, where there are computers, there are people contemplating ways of breaking them. Most of these controllers were not visible to the average user, so they did not get attention from hackers. However, that also meant that their manufacturers often got lazy in building in the security to protect them. Now that they have the attention of the hackers, companies are scrambling to protect their controllers. Otherwise, we may be in for some rough times ahead at malicious or inadvertent attacks on our infrastrucutre.

Facebook Privacy

1 Comment

If you use Facebook regularly, you probably have seen the following in the last couple of days:

PRIVACY NOTICE: Warning – any person and/or institution and/or Agent and/or Agency of any governmental structure including but not limited to the United States Federal Government also using or monitoring/using this website or any of its associated websites, you do NOT have my permission to utilize any of my profile information nor any of the content contained herein including, but not limited to my photos, and/or the comments made about my photos or any other “picture” art posted on my profile.

You are hereby notified that you are strictly prohibited from disclosing, copying, distributing, disseminating, or taking any other action against me with regard to this profile and the contents herein. The foregoing prohibitions also apply to your employee , agent , student or any personnel under your direction or control.

The contents of this profile are private and legally privileged and confidential information, and the violation of my personal privacy is punishable by law. UCC 1-103 1-308 ALL RIGHTS RESERVED WITHOUT PREJUDICE

Ignore it, it is one of many hoaxes that appear on Facebook.   As I understand it, the law cited has to do with commercial law, and does not address anything about privacy in Facebook or otherwise.

BUT, the hoax does remind us of an important topic, Facebook Privacy.  Your privacy in Facebook is controlled by you through your privacy settings.   To find your privacy settings, look for the small arrow on the top right hand portion of your Facebook page, circled in the image below.   If you click on it you should get a listing of pages you own and some options.

 

From this menu, select “Privacy Settings,”  and you will get a menu of your various Facebook settings like:

 

These are the items that you can control.  Clicking on the blue “Edit Settings” will allow you to control the items in those categories.  So, if you select “edit settings” in “How you connect” you see a menu such as the one below:

 

 

This literally shows who can see you and request friendship or send messages.  In my case, I have left these settings open.  I have provided no telephone numbers, so there is nothing to see.  If I provided phone numbers, though, I would make sure only “Friends” could see the numbers.  By leaving open the email address, this allows people to find me by searching on the email.

I do know people who have limited who can send friend requests to only friends of friends.  It does limit the number of times you get friend requests, but it does limit your network to people in certain categories of your life.  If that is what you want, then button it down.

The second category is what people can post in the profiles or how Facebook controls tagging.

As you can see from the drop down box, in each case you can show the information to everyone (who has a Facebook account), to Friends of Friends, or just Friends.  In addition, you can limit it to people on certain lists, or even specify the friends using custom.  For example, I have limited who can post to or see my wall to Friends.  Although little of what I post on Facebook is too personal, I do not want everyone in the world being able to read it.   Limiting it to my friends does give me some control.

Now, what if you want to limit a specific post or photo?  Facebook does give you the ability to do that individually through the inline audience selector.  When you are posting, there is a blue menu at the bottom of the post as shown below.

 

Using the small arrow, you can select who can see the post to limit it to only some people, all your friends or everyone.  This gives you individual control.

A WORD OF WARNING:  While it is important to control your privacy settings so that unintended people do not get control of your personal information, you need to remember that once something is posted, you lose control of that information.  People who can see your post can easily re-post it or save it and post it somewhere else.  This is not a case of “What happens in Vegas stays in Vegas.”  Rather, it is a case of “it is on the Internet FOREVER.”  Before you post, think carefully about how much of a problem you might have if the information ended up with your boss or co-workers, a potential boss, members of your family or whatever.  It might not be a problem today, but if it stays there forever, you might find it to be a problem later.

Facebook Privacy — Vote Now

Leave a comment

Social networking sites pose a threat to the privacy of every individual.  We love the sites because they allow us to share information and photos easily with our friends and family.  Many people also learn to hate the sites because their information suddenly is used in ways that the individual did not know could happen.  I have written before about the need to lock down your privacy in social networking sites, especially in Facebook.

Facebook is about to change their privacy settings — and they are allowing users to help them decide what to do.  In May Facebook proposed privacy changes and included a statement,

Opportunity to comment and vote Unless we make a change for legal or administrative reasons, or to correct an inaccurate statement, we will give you seven (7) days to provide us with comments on the change. If we receive more than 7000 comments concerning a particular change, we will put the change up for a vote. The vote will be binding on us if more than 30% of all active registered users as of the date of the notice vote.

That 30% hurdle is pretty significant, but you should voice your opinion by voting on the referendum by June 8 at 9:00pm (PDT).  To do this, go to https://www.facebook.com/fbsitegovernance/app_130362963766777.  When you come upon that page, there are four documents to consider, the current Statement of Rights and Responsibilities (SRR), the current  Data Use Policy, the proposed Statement of Rights and Responsibilities (SRR), and the proposed Data Use Policy.   Clearly, the proposed documents do not tighten the scope with which they protect data.  Instead the documents outline how Facebook will increasingly use more of your data in ways you did not intend.

While it is not clear that voting will make a difference, I suggest you vote BEFORE June 8.  I voted to keep the current documents and hope you will too.

Older Entries