Hikvision Cybersecurity Director Outlines 3 Rules for Creating Good Passwords to Reduce Security Concerns and Hacking Risks

January 28, 2019

Hikvision HikWire Blog - Chuck Davis on Passwords

Hikvision Cybersecurity Director Outlines 3 Rules for Creating Good Passwords to Reduce Security Concerns and Hacking Risks


Hikvision’s director of cybersecurity, Chuck Davis, has authored numerous blogs about cybersecurity best practices, ways to reduce vulnerabilities, and tips to prevent malware attacks. In today’s blog, Davis outlines the rules to creating good passwords so you can reduce security concerns and the risk of being hacked.

Below, Davis offers insights for password creation, with tips and tricks to create unique, complex passwords for every site without having to remember each one.

Long Passwords, Short Memories

The password is something we all love to hate. Many of us have to create hundreds of passwords and we’re told by the paranoid cybersecurity experts to make them long and use all of the character sets on your keyboard so that they are not easy to guess. This also makes them difficult to remember, so what do most people do? They re-use passwords—which is also a big no-no.

While we all know these general rules, most people don’t know why they exist and what the real risks are. In this blog, I will help you understand the importance of following the rules when developing your list of passwords.

Three Tips for Creating a Good Password

Below are three tips for creating complex and hard-to-hack passwords.


  1. Make them long: There is some debate over the best minimum length of a password. Analysis from security expert, Troy Hunt, has shown that many of the sites we use do not require very long passwords. However, research from Georgia Tech Research Institute (GTRI) shows that the longer the password, the better. Even back in 2010, Richard Boyd, a senior researcher at GTRI said, “Eight-character passwords are insufficient now… and if you restrict your characters to only alphabetic letters, it can be cracked in minutes.” Another GTRI research scientist involved in the project, Joshua L. Davis, said that, “any password shorter than 12 characters could be vulnerable -- if not now, soon.” As computing power increases, the number of characters in a "long password" will increase as well.
  2. Strong password have multiple characters: Use all four character sets including uppercase letters, lowercase letters, numbers and special characters. In most cases, spaces are also allowed, which means you can use a sentence as your password or passphrase.

The reason you should follow this rule is due to a certain password-cracking tool that uses a rainbow table—a database of possible passwords and their associated hash. We’ll talk more about rainbow tables in a subsequent blog post but for now, to explain rainbow tables, let’s imagine you have a dictionary of words, without the definitions, that contains all English words in only lowercase letters. That’s a pretty thick book. Now stack on top of that a dictionary of all English words in only uppercase letters. It would make the stack twice as high. Now add to the stack, a book filled with all numbers from 0 to 99999999. Each of these books represents a rainbow table of possible passwords. In a computer, each of these databases is very large but they can be managed with a laptop and a large amount of storage. Now imagine if you had one book that had all three of those dictionaries, plus every word in mixed-case and with numbers substituting letters, combined together. For example, the word “bat” might have the following options:

So you can see that creating an eight character, all-lowercase password could be a relatively quick exercise for a hacker to crack with minimal effort and computing power. However, if you created a 20-character password with all the character sets, it would be quite difficult to crack due to the size of the rainbow table and the computing power needed to execute the attack.

  1. Create a unique password for every login: Creating unique passwords for every account is very important. The reason is that if an attacker discovers your password for one account, they are likely to try that password for other popular online services and could gain access to all of your accounts. The advice to create unique passwords for every site and every application is sound, but since most people don’t know why that is recommended, they tend not to follow it. But with so many data breaches happening nowadays, your account information has likely been compromised for one site or another. When those databases of cracked usernames, email addresses and passwords are posted to the Internet, threat actors will take something such as a LinkedIn email address and password, and attempt to use it on Facebook, Twitter, Google, Instagram, Snapchat and any other popular website they can think of to see if it works there as well.

Be Alerted if Your Email is Part of a Security Breach

A tip to help you identify if you have been the victim of a security breach is to visit and enter your email address. This site is hosted by a respected cybersecurity professional named Troy Hunt. Make sure to enter all work and personal email addresses, and subscribe to get updates. If your email address is ever found in a data breach, you will be alerted. They won’t have every data breach, but if there are a large number of usernames and/or passwords posted to the dark web, the site will likely add that list and email you if your username/password has been part of that data breach.

Recap of Top Password Rules

So let’s recap. We are supposed to create a password for every website that is:

  • More than 20 characters long
  • Uses uppercase and lowercase letters, numbers, and special characters
  • Is unique and never reused

This is an unreasonable request given that many of us have more than 100 passwords. So how can we follow the rules and reduce our risk of being hacked? The answer is a password manager. In an upcoming blog post, we will discuss password managers and how to use them so you can reduce your security concerns.

IMPORTANT! This model requires non-standard firmware. Do Not Install standard firmware (e.g. v.4.1.xx) on this model. Doing so will permanently damage your system. You must use custom firmware v.4.1.25 from the iDS-9632NXI-I8/16S product page.

View the most updated version of this document here:


The I-series NVR (such as the DS-7716NI-I4) is one of Hikvision's most popular and feature-rich recorders. As such, many firmware revisions have been introduced over the years to continually ensure the product is compatible with the newest technology available. Due to the many revisions, we recommend that the user closely follows the instructions below in order to reduce the amount of time spent as well as the chance of failure.


Database Optimization and Repair

As more affordable IP cameras are introduced over time with greater video resolution and data sizes, more efficient database management also becomes necessary. The introduction of firmware v4.0 brought about a new database architecture in order to be futureproof.


After upgrading to v4.X, the recorder database will need to be converted and optimized. If you are experiencing issues where playback is expected but not found, make sure "Database Repair" is performed as indicated in the procedures and scenarios below.


Preparing the Upgrade

Before proceeding with upgrade, it is recommended that NVR configuration file is exported from the NVR over the network or on to a local USB drive.


Upgrading from v3.4.92 build 170518 or Older

  1. All recorders must reach v3.4.92 before proceeding further. Upgrading from versions before v3.4.92 directly to any version of v4.X will likely cause the recorder to fail.
  2. If the recorder is already at v3.4.92, a full factory default is highly recommended before upgrading to any version of v4.X. There is a high chance of unit failure (requiring RMA) if the unit is not defaulted before upgrade.
  3. After reaching v3.4.92 and performing a full factory default, an upgrade directly to v4.50.00 is acceptable.
  4. After the upgrade is completed and the recorder is reprogrammed, it may be beneficial to perform a Database Repair. For details, refer to the section "Database Optimization and Repair" above.
  5. To verify repair progress, you may refer to the HDD status, or search the recorder log for repair started and stopped entries. Note that while the HDD is repairing, new recordings are still being made, but some existing recordings may not be searchable until repair is complete.
  6. If you continue to observe playback issues after database repair, ensure there are no power, network, or motion detection issues. Should the problem persist, contact technical support.


Upgrading from Any v4.X Build to v4.50.00.

  1. Any v4.X build can be upgraded directly to v4.50.00.
  2. Export configuration is highly recommended before performing the upgrade.
  3. If upgrading from any v4.X version that was not v4.22.005, a Database Repair is recommended. Refer to Step 4 and onwards in the previous section.



Downgrading is not recommended. Due to new features and parameters constantly being added, downgrading may cause the NVR to factory default itself or require a manual default to operate properly.

View the most updated version of this document here:
K-Series DVR upgrade instruction
The Turbo 4 Hybrid DVR K series has multiple models and across different platform and chipset. It also has similar firmware development of other recording product line; DVR K series has also introduced the GUI4.0 to ensure the series to be compatible to the newest technology available. The new database architecture is also brought into the DVR firmware v4.0 to be future proof and for better recording search experience. 

Database Optimization and Repair

As more affordable cameras introduced over time with greater video resolution and data sizes, more efficient database management also becomes necessary. The introduction of firmware v4.0 brought about a new database architecture in order to be futureproof.
After upgrading to v4.X, the recorder database will need to be converted and optimize. If you are experiencing issues, where playback is expected but not found, please make sure to perform "Database Rebuild" as indicated in the procedures and scenarios below.

Preparing the Upgrade

Before proceeding with upgrade, it is recommend exporting DVR configuration file from the DVR over the network or on to a local USB drive.


Action after firmware upgraded 

1. Upgrade the DVR according to the chart above. 

2. Reconfirming Channel's Recording Schedule 

    - Confirm channel's recording schedule is enable. 

    - Check if the channel is on correct recording schedule.

3. Double Check Storage Setting

    - Make sure all channel are assigned to record on its HDD group when the Storage setting is under Group Mode. 

4. Perform Database Rebuild locally. 

    • Some version above support Database Rebuild via web access - K51 and K72

    • Perform Database Rebuild regardless if system is having any database issue symptom. 

    • Database Rebuild process is average ~30 to 60min per TB. The process may still varies depends recording data.

    • After Database Rebuild - Check log to confirm Database Rebuild has went thru properly. 

    • If Database Rebuild Started and Stopped log has been log only within few minutes. Database rebuild may not has been completed properly. It is strongly recommend performing the Database Rebuild again.

    • To check log > System > Log > Information > Database Rebuild Started and Stopped.

    • If the log option is not available - access system via SSH can also obtain similar result.

5. Recording Data is still missing after database rebuild process. 

If the data has not been recorded or has been overwritten, Database rebuild process is not able retrieve those lost data. Have the system upgraded to the latest available firmware version above to prevent any future data lost is strongly recommended for all application.





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