The name of the issuer is China Information Security Technology, Inc., a Nevada corporation (the "Company"), which has its principal executive offices at 21st Floor, Everbright Bank Building, Zhuzilin, Futian District, Shenzhen, Guangdong, 518040, People’s Republic of China. This statement relates to the Company’s common stock, $0.01 par value per share (the "Common Stock").

(a)-(f). This Schedule 13D/A is being filed by Mr. Jiang Huai Lin, a citizen of the People’s Republic of China (the "Reporting Person"). The principal address of the Reporting Person is 21^st Floor, Everbright Bank Building, Zhuzilin, Futian District, Shenzhen, Guangdong, 518040, People’s Republic of China. The Reporting Person is Chairman, President and Chief Executive Officer of the Company. The Reporting Person is also the 100% owner of Total Device Management Limited, a company formed in the People’s Republic of China, with its principal executive offices at 3505-06, 35/F Edinburg Tower, The Landmark, 15 Queen’s Road Central, Hong Kong.

During the last five years, the Reporting Person has not been (A) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (B) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, Federal or State securities laws or finding any violation with respect to such laws.

Prior to January 12, 2010, the Reporting Person was deemed to beneficially hold an aggregate of 21,750,080 shares of the Company’s common stock. Such 21,750,080 shares consisted of 19,150,080 shares of Common Stock owned directly by the Reporting Person and 2,600,000 shares held by Total Device Management Limited, an entity controlled by the Reporting Person.

The Reporting Person used his personal funds to acquire the original shares directly owned by him and Total Device Management Limited used its own working capital.

On January 12, 2010, the Reporting Person transferred and sold 1,600,000 shares of the Company’s Common Stock held directly by him to certain purchasers (the "Purchasers"), at a price of $6.15 per share, pursuant to the terms and conditions of a securities purchase agreement, dated January 7, 2010, by and among the Reporting Person, the Company and the Purchasers (the "Securities Purchase Agreement"). The Company concurrently offered and sold 1,652,033 shares of the Company’s common stock pursuant to the Securities Purchase Agreement. The foregoing description of the Securities Purchase Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of that agreement, which is filed as Exhibit 10.1 to the Current Report on Form 8-K filed by the Company on January 8, 2010.

On January 12, 2010, the Reporting Person received a grant of 20,000 restricted shares of the Company’s common stock under the Company’s 2007 Equity Incentive Plan.

Following the Reporting Person’s disposition of 1,600,000 shares of the Company’s common stock on January 12, 2010, and the Reporting Person’s receipt of 20,000 restricted shares of the Company’s common stock on January 12, 2010, the Reporting Person holds 19,170,080 shares of the Company’s Common Stock directly and 1,000,000 shares of the Company’s Common Stock indirectly through Total Device Management Limited.

The Reporting Person holds the remaining securities directly and indirectly through Total Device Management Limited solely for investment purposes. The Reporting Person has no intention other than to hold the shares for investment and/or sell the shares, as permitted by law.

The shares held by the Reporting Person is subject to a 90-day lock-up agreement, dated January 12, 2010, between the Reporting Person and Rodman & Renshaw, LLC, the exclusive placement agent in connection with the concurrent offering of shares by the Reporting Person and the Company. The lockup provision is expected to expire on April 7, 2010.

Except as set forth in this Schedule 13D, the Reporting Person has made no proposals, and has entered into no agreements, which would be related to or would result in any of the events or matters described in part (a) through (j) of Item 4 of Schedule 13D.

(a)

(b)

The Reporting Person has the sole power to vote and dispose of 20,170,080 shares.

(c)

(d)

Other than the Reporting Person, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the Reporting Person's securities.

(e)

Not applicable.

Except as disclosed herein and in the Current Report on Form 8-K filed by the Company on January 8, 2010, there are no contracts, arrangements, understandings or relationships (legal or otherwise) among the Reporting Person and any other person with respect to any securities of the Company, including, but not limited to transfer or voting of any of the securities, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies.