Basically, Smishing is Phishing (like you get in your email), except it's on your Smartphone through SMS Text messages. The word itself is a mashup of SMS and Phishing, as you can see better when it's displayed like this: SMiShing.

Smishing is dangerous, as a text sent to your phone implies legitimac...

A must read for everyone, although some mitigation options listed are quite expensive and others only possible in highly-managed Enterprise environments. 

Full SEI Article - 

Identity theft, or identity fraud, is a crime that can have substantial financial and emotional consequences. Take precautions with personal information. If you become a victim, act immediately to minimize the damage.

• Full US-CERT Article - https://www.us-cert.gov/ncas/tips/ST05-019 
  

Do not give sensitive information to others unless you are sure that they are indeed who they claim to be and that they should have access to the information.

• I suggest reading the entire US-CERT Article, as this applies to both Individuals and Businesses - https://www.us-cert.gov/ncas/tips/ST04-014&...

Because of its popularity, the internet has become an ideal target for advertising. As a result, spyware, or adware, has become increasingly prevalent. When troubleshooting problems with your computer, you may discover that the source of the problem is spyware software that has been installed on you...

While email attachments are a popular and convenient way to send documents, they are also a common source of viruses. Use caution when opening attachments, even if they appear to have been sent by someone you know.

• Full US-CERT Article - https://www.us-cert.gov/ncas/tips/ST04-010
  

When vendors become aware of vulnerabilities in their products, they often issue patches to fix the problem. Make sure to apply relevant patches to your computer as soon as possible so that your system is protected.

• Full US-CERT Article - https://www.us-cert.gov/ncas/tips/ST04-006

Explore the resources in this section to learn more about cybersecurity and to better secure your home and small-business networks - Provided by US-CERT:

• US-CERT Page - https://www.us-cert.gov/home-and-business
  

Alerts provide timely information about current security issues, vulnerabilities, and exploits - Provided by US-CERT:

• US-CERT Page - https://www.us-cert.gov/ncas/alerts
  

Tips describe and offer advice about common security issues for non-technical computer users - Provided by US-CERT:

• US-CERT Page - https://www.us-cert.gov/ncas/tips