Showing posts with label spam blocker. Show all posts
Showing posts with label spam blocker. Show all posts

March 31, 2010

Strategies To Fight Email Spam

If you are a business owner and you rely on email, spam is going to be a major concern. How you address it can make a big difference in employee efficiency. Email spam has been a nuisance and has gotten even worse over the last several years. Email spam slows down server performance and can eat away at storage. Cleaning all those bad messages out of your inbox is time consuming. The easiest way for viruses to spread is via email.

Having a strategy to deal with email spam and viruses threats is essential for any business to survive and be productive. You can limit the negative impact to your business by having policies and guidelines in place.

Tips to avoid getting email spam:

  • If you have a company web site, use a contact form that the web site visitor can fill out. Some spam mers use robots that crawl web pages looking for email addresses. Your web site designer should be able to help you with this.
  • When signing up for forums, products and services use a free email or throwaway account like hotmail or Yahoo mail.
  • When signing up for offers be careful what boxes you check although technically not spam you may get a lot of email offers you do not want.
  • Never reply to an email spam message, this just lets them know that your account is active.
  • You may want to use a throwaway email address if you post on newsgroups or forums.
  • These measures may help to reduce spam, but if you have an old email address you may want to change your email address or deploy a spam filter system. There are several choices for anti spam systems you could buy software that runs locally on your PC to filter the spam, but this can be expensive, does not prevent virus infection, and is not a good choice in a networked environment. Managing individual machine spam software is inefficient.
If you have limited technical resources you can outsource you email spam filtering to a hosted anti spam and virus solution provider. Spam filter service providers colocate their spam and virus filters in data centers with redundant power and network connections. You will need to change your mail exchanger on your dns servers to point to the service providers spam filters. Your service provider will then scrub your email for spam and viruses. They then forward your email to your mail server minus the spam and viruses. This gives you a few extra layers of protection. In the event of a network outage or server downtime your email is held and is delivered when the network or your server is available minus the virus and spam. Spam filter services also scan for viruses; this adds another layer of defense to the virus software already running on your network.

If you have an organization with more than one hundred email boxes investing in your own spam filter appliance is the most cost effective solution if you have the technical expertise to manage the system. A spam appliance sits in front of your email server and blocks spam and viruses. The price of the spam appliance will depend upon your number of users, amount of mail and storage requirements.

Fighting spam is no longer be a losing battle if you have a good strategy to deal with the threat.
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March 23, 2010

Fighting Spam!

It's been nearly a decade since spammers and their enemies begun evolving competitively. As with the classic cheetah/gazelle model originally formulated by Darwin, each time one group becomes a little faster or more agile, its adversaries develop traits for outwitting and outrunning it.

In addition to wasting people's time with unwanted e-mail, spam also eats up a lot of network bandwidth. Consequently, there are many organizations, as well as individuals, who have taken it upon themselves to fight spam with a variety of techniques. But because the Internet is public, there is really little that can be done to prevent spam, just as it is impossible to prevent junk mail.

Nobody wants it or ever asks for it. No one ever eats it; it is the first item to be pushed to the side when eating the entree. Sometimes it is actually tasty, like 1% of junk mail that is really useful to some people.

The number of unsolicted commercial electronic messages received by the average American in 2001 was 571, according to Jupiter Media Metrix. By 2006, Jupiter says, that number will increase to 1,400, with more than 206 billion spam messages going out over the course of the year. While these numbers are notoriously difficult to calculate, every survey and ISP record points to dramatic increases in spam, sometimes as much as 300 percent year over year. One reliable indicator of the problem's magnitude is the size of the anti-spam effort. The range of tools available to ISPs, enterprises and consumers in the fight against spam grew considerably during the Web bubble. Simultaneously, heavyweight Web marketers and interactive ad players have been scrambling to distinguish their services from the bad guys, as well as to counteract growing calls for government controls on digital marketing.

In one of the biggest such moves, the Direct Marketing Association (DMA), through its subsidiary, the Association of Interactive Marketing (AIM), has released online commercial solicitation guidelines in an effort to promote high ethical standards among marketers. The rules require that members let e-mail recipients know how they can refuse future mailings and allow consumers to prevent the sale or rental of their addresses
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March 21, 2010

Everybody Hates Spam

There is nothing like checking your email only to find out that your inbox is swamped with unsolicited message from people you do not know. No you’re not interested to buy dog food, beauty products, slimming pills, plants, or software! But still, you get these irritating emails.

Spam, this tiny four letter word has annoyed millions of people around the world.

What is spam anyway? Spam also called unsolicited commercial email (UCE), unsolicited bulk email (UBE) or junk mail, is unwanted email sent to multiple people usually for the purpose of advertisement.

Spam has produced negative effects aside from annoying people. Apparently, it is a waste of time to sort through tons of email while trying to figure out which email is valid and which is spam. Oftentimes you missed out those important messages just because you thought they were spam. Spam has also the potential to spread virus, pornography, and scams.

It is not only individuals who are affected by spam. Large companies and other businesses are suffering as well.

Many companies have already filed lawsuits against spammers who send spam and claim that they are from those companies, when in fact they are not and were just sent to cause turmoil and ruin the companies’ reputation.

The NCSA and Bank of America released a study called “Online Fraud report” and it showed that 87 percent of its respondents were confident that they could distinguish real emails from fraudulent emails. It turned out that 60 percent failed to identify the legitimate emails. This only shows that the spam problem has become even worse. Most people could not even recognize legit emails from spam.

Receiving spam is indeed such a hassle for people and for businesses.

You may be wondering how these spammers found your email address. With the existing technology available today, you should not be surprised to find that spammers use a lot of techniques for them to obtain other people’s email addresses. They could get email addresses from DNS listings, Usenet postings, or web pages, they also could guess common names at popular domains, or use programs called web spiders to search for email addresses on the web.

So how do you get rid of spam? Unfortunately, there is no 100 percent solution to this problem. You may try anti spam software or spam filters but this will only reduce the number of spam that you receive but will not totally eliminate them.

Another thing that you can do is to click that unsubscribe link, usually found at the bottom of email spam.

As I told you earlier, some spammers acquire email addresses through guessing common names at popular domains so it would be wise to set up an email account that is hard to guess. Use a different email when signing up with forums, mailing lists, chat rooms, news groups, and registering with websites.

Aside from email spam, a new range of spam has recently emerged. Spammers have found new ways on how they could get those spams to people. The new target of spammers are news groups, forum groups, instant messaging, online game communities, blogs, and even guest books.

With spam rising progressively, it is really important that you understand its nature and protect yourself through learning more on how you can get rid of it. Spam can waste your time, energy, and money so it would really be wise that you know how to block those annoying messages.

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March 17, 2010

Email Anti Spam And Virus Protection For Businesses

There Is Hope

With anti spam vendors offering low cost licensing, businesses can now afford advanced email spam and virus protection with a simple to use interface at a much lower cost. The great thing about technology is that as it evolves it gets faster, additional features and economical. Over the past few years the same evolution has taken place with anti spam technology and services. In large part this can be attributed to the open source software community plus enterprising companies enhancing the capabilities of this software and packaging it into easy to use anti spam appliances.

It is not practical to have anti spam software running on desktops in a networked business environment. Managing all employee junk email software at the desktop is not realistic. It can be a nightmare and costly in terms time and licensing.

Spam appliances sit in front of your email server so that when email comes in it will first go to the spam appliance and the email will be scanned for spam as well as viruses. The filter will block the message if it identified as know spam. If the filter is not sure if the email is genuine it will quarantine and hold the email at the filter and it will be stored until the recipient deletes it, releases it to their email box, or they can white list a trusted correspondent so that future emails will not be held back. This will greatly reduce the load on your email server and reduce your bandwidth needs. We have seen anti spam systems block up to 83% of incoming messages. This could help extend the life of your email server and push back the need for upgraded capacity.

Most virus outbreaks occur via email and for little cost an appliance can block viruses before they reach your network and user’s inboxes. This provides an extra layer of defense in addition to your current anti virus solution.

Businesses have two options if they use an appliance based solution for their spam and virus control. They can purchase and administer their own filter. This is a good option if you have a large number of employee mailboxes to protect and the technical staff to administer the spam appliance. Businesses also have the option to outsource their spam control as a hosted service. This is a good choice for smaller companies and if information technology is not your specialty.

If you purchase your own spam filter, a subscription to updates may also be required. Make sure you get upfront pricing for the add-ons that you will need. If you have more than 100 email users and the technical staff to maintain the spam appliance, buying your own filter may be your best option. Generally the basic model will work for most organizations. Large organizations with thousands of users will require a spam filter appliance with increases capacity and features. Spam appliances are designed to work with all mail systems but some do have specific enhancements for Exchange server Microsoft’s popular collaboration software and mail servers that support LDAP (light weight directory access protocol). Spam appliances use the LDAP protocol to verify recipients before delivering messages to your email server, this avoids consuming server resources.

If your business has five to one hundred employees, then an outsourced anti spam and virus filter service is going to be a good economical choice for your organization. Fees are based on the number of users and you only pay for what you use. You will not have hardware to buy, maintain, and upgrade. The upfront cost is minimal and most email filtering providers will let you try the service for free at first. Another added benefit to outsourcing your spam control is redundancy. It is important that you choose a provider that has their spam and virus filters collocated at secure internet data center facilities. Data centers provide redundant network connections and power, so if your email server or internet connection is down unexpectedly the spam appliance will hold your email until your email server becomes available, minus spam and viruses.

Anti spam technology is constantly improving and the costs are getting lower. With increased productivity and an added layer of defense against virus attacks, an anti spam appliance or service is something your business can not afford to be without.
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March 11, 2010

What Is Spam?

You have probably seen an increase in the amount of junk mail which shows up in your email box, or on your favorite newsgroup. The activities of a small number of people are becoming a bigger problem for the Internet.

Chain letters that ask for money, whether for reports or just straight up, are illegal in the US whether they are in postal mail or e-mail. Report these frauds to your local US Postmaster. You may see e-mail coming from Nigeria or another African country, sent by someone who wants to use your bank account to transfer 20 million dollars. This is called a '419' scam and people have been killed over it.

Spam is flooding the Internet with many copies of the same message, in an attempt to force the message on people who would not otherwise choose to receive it. Most spam is commercial advertising, often for dubious products, get-rich-quick schemes, or quasi-legal services. Spam costs the sender very little to send -- most of the costs are paid for by the recipient or the carriers rather than by the sender. To the recipient, spam is easily recognizable. If you hired someone to read your mail and discard the spam, they would have little trouble doing it. How much do we have to do, short of AI, to automate this process? I think we will be able to solve the problem with fairly simple algorithms. In fact, I've found that you can filter present-day spam acceptably well using nothing more than a Bayesian combination of the spam probabilities of individual words. Using a slightly tweaked (as described below) Bayesian filter, we now miss less than 5 per 1000 spams, with 0 false positives.

One particularly nasty variant of email spam is sending spam to mailing lists (public or private email discussion forums.) Because many mailing lists limit activity to their subscribers, spammers will use automated tools to subscribe to as many mailing lists as possible, so that they can grab the lists of addresses, or use the mailing list as a direct target for their attacks.
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March 8, 2010

Digging Into Spam And Filtering Services

If you talk to anyone who uses email, spam is something that is frequently on there mind. How often is it that you open your inbox checking for an email from your mom, and you end up with emails with subjective titles involving animals, and foreign objects.

There are ways to fight back against Spam, and one of the most popular is through the use of a spam filtering service. There is all different types of spam, and surprisingly not all of them involve email. Most spamming involves the advertising or otherwise promotion of a product, however this is not true in some cases.

Most common types of spamming include:
  • Email spam,
  • Link spam and
  • Search engine spam.

Email Spam is the simple act of sending out massive amounts of 'junk email' to anyone and everyone, in order to promote a product. Often times spamming has been exploited by more 'undergorund' industries such as the adult industry, but it would be unfair to say that other industries haven't used it as well.

Link Spam is a form of spamming or spamdexing that recently became publicized most often when targeting the increasingly popular weblogs. Weblogs is one of the biggest problems, however link spam also affects guestbooks, and online discussion boards. The purpose behind spamming these various places, is to display hyperlinks to a various page or product, which helps both with user exposure and search engine popularity.

Search engine spam is usually closely related with the above "link spam", as it is the process of creating countless numbers of pages, that populate search engines. Often times these pages will be full of garbage text and have no real value on there own. When a user visits them, they will either be re-directed to a completely different page, often times on another domain, or show prominent advertising.

Everyone can take their part in removing spam. The easiest way for a general user to not encourage spam, is not to use it. Spammers only spam, because it must be effective, otherwise they would find something better to do with their time. It is also recommended to get various levels of personal spam protection, which is often times included with anti-virus software. 3rd party solutions such as Hotmail, have very good spam detection, however often times spam will leak in, and in that case you can help hotmail out by notifying them of the occurence, so that they can better help protect you next time.
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