<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>115 - Disclosure - Subsequent Events</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

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</LabelSeparator><Level>1</Level><ElementName>us-gaap_SubsequentEventsAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Subsequent Events [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_SubsequentEventsTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>verboseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P01_01_2013To06_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"&gt;  &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;&lt;strong&gt;Note 9. Subsequent Events&lt;/strong&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;&amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;In July 2013, the Company and Lakeshore amended  its loan agreement. Pursuant to this amendment, the Company has an  option to pay Lakeshore $&lt;font style=" FONT-SIZE: 10pt"&gt;750,000&lt;/font&gt; for the return of &lt;font style=" FONT-SIZE: 10pt"&gt;250&lt;/font&gt;&amp;#160;shares common stock of NOW  Solutions&amp;#160;in Lakeshore&amp;#8217;s possession  representing&amp;#160;&lt;font style=" FONT-SIZE: 10pt"&gt;25&lt;/font&gt;%  ownership of NOW Solutions.&amp;#160;The option expires on August 16,  2013. In consideration of this option and Lakeshore&amp;#8217;s  extension to make this payment, Now Solutions paid Lakeshore fees  totaling $&lt;font style=" FONT-SIZE: 10pt"&gt;30,000&lt;/font&gt; and agreed  to pay &lt;font style=" FONT-SIZE: 10pt"&gt;25&lt;/font&gt;% of any profits to  Lakeshore from the period that runs from March 15, 2013 through  August 16, 2013 which will be due no later than December 31, 2013.  As additional consideration, the Company increased the interest  payable to Lakeshore from Net Claim Proceeds (less any  attorney&amp;#8217;s fees and direct costs) from any litigation or  settlement proceeds related to the SiteFlash technology from &lt;font  style=" FONT-SIZE: 10pt"&gt;5&lt;/font&gt;% to &lt;font style=" FONT-SIZE: 10pt"&gt;8&lt;/font&gt;%. For details about the Loan Agreement  with Lakeshore, please see &amp;#8220;Notes Payable&amp;#8221; in Note  3.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;&amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;In August 2013, a third party lender loaned VHS  $&lt;font style=" FONT-SIZE: 10pt"&gt;150,000&lt;/font&gt;. Pursuant to the  loan agreement, VHS issued a promissory note bearing interest at  &lt;font style=" FONT-SIZE: 10pt"&gt;10&lt;/font&gt;% per annum to the lender  in the amount of $&lt;font style=" FONT-SIZE: 10pt"&gt;150,000&lt;/font&gt;  payable in &lt;font style=" FONT-SIZE: 10pt"&gt;90&lt;/font&gt; days from the  date VHS received funds. Under the terms of the agreement, VHS is  obligated to pay a $&lt;font style=" FONT-SIZE: 10pt"&gt;5,000&lt;/font&gt;  commitment fee no later than the date the note becomes due. In  consideration of the loan, the Company issued &lt;font style=" FONT-SIZE: 10pt"&gt;5,000&lt;/font&gt; shares of VHS Series B Preferred  Stock and committed to issuing &lt;font style=" FONT-SIZE: 10pt"&gt;  500,000&lt;/font&gt; shares of VCSY common stock at a future date to the  lender.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;&amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;For the period from July 1, 2013 through August  14, 2013, the Company cancelled &lt;font style=" FONT-SIZE: 10pt"&gt;  1,500,000&lt;/font&gt; previously issued common shares and granted &lt;font  style=" FONT-SIZE: 10pt"&gt;&lt;font style=" FONT-SIZE: 10pt"&gt;  1,500,000&lt;/font&gt;&lt;/font&gt; common shares for services to consultants  of the Company that vest on December 31, 2013 and are valued at  $&lt;font style=" FONT-SIZE: 10pt"&gt;45,000&lt;/font&gt;.&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;&amp;#160;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"   align="justify"&gt;For subsequent events involving litigation, please  see &amp;#8220;Legal Proceedings&amp;#8221; in Note 8.&lt;/div&gt;  &lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. 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